Eren Yaeger: A theory why the person devoted to freedom is in fact the least free character of all. (up to ch. 136)
Questions that lead me to this theory: Why did Eren behave so strangely? Why did he isolate himself from the rest? Why the hell did he decide to end the world? And why did he never really try to find another way?
“What about you is free?” - Chapter 134
So, despite the flood of possible theories people came up with, I couldn’t find any that provided satisfying answers for several contradicting moments. It had me reading the manga after all and musing three days and nights until I settled with a surprisingly simple approach that I haven’t yet found among the common theories. The short answer for Eren’s weird behaviour and decision for apocalypse remains the same: “Because I was born into this world”. But, in a different way of interpretation. If you don't want to read the long version, there's a summary at the end as well ;)
So far, this quote had been mostly interpreted as justification for the freedom to live, and the freedom to fight for survival. It’s the ultimate justification for Erens decisions, no matter how despisable they are, since he's fighting for their own survival. Yet, it sounds somewhat odd from Eren Yaeger, who had always been anything but a philosopher to begin with. Why wouldn’t he justify his decision with “because they will never leave Eldia in peace”, “because it’s the only way to end the war”, “because they had taken everything from me” or simply “because we have to keep on fighting”. That would have sounded much more like him, but not such a cryptic statement.
With the latest chapters, it became apparent that Eren was indeed severely suffering under the guilt and notion of destroying the world. So why would he not think of a different way? Why don’t we see him talk to his friends and discuss alternatives? Why does he never even try to find a solution? If anyone, it would be Eren to fight against a future he didn’t want to accept, no matter how small the chance of success. But all he does is to refer to the inevitable, unchanging future. The only spark of rebellion shown is in the pathetic attempt to safe one boy, which again end in him stating that "the future doesn't change"
The idea that Eren is in fact not free to choose their future first struck me during his conversation with Rainer, where he claims they were both the same. Yes, they had both believed to do the right thing, to be a hero, but ended up with nothing but guilt, the wish to be judged upon and to finally put an end to it all. But in that moment, Eren had yet the chance to decide. It would have been so easy to accept Rainer as scapegoat for his revenge, but he only acts as if his decision was already set in stone. He never looked angry with Rainer to begin with. So it clearly wasn’t revenge he had in mind when attacking Liberio. In fact, he was simply moving forward and carrying out Zeke’s plan which would eventually lead him to his true goal: To eliminate the enemy.
Who or what exactly is the enemy/ enemies? (As far as I know, there’s no difference in Japanese language) First, it’s the titans, then the Marleyans, but now it seems to be cycle of life, death and hatred itself. Rainer, Zeke and Eren all came to this conclusion and even the last season’s opening song suggests this true motive: “Destruction, regeneration, you are the real enemy” (-My war-).
“Because I was born into this world” - reinvented
Chapter 121 underlines yet again that this phrase contains the central key to Eren’s motives. After all, it’s all it needs to thwart the great plan of Zeke – the most sharp-witted character that had been fooling everyone else throughout the whole story. Zeke’s demise came from assuming that Eren had been brainwashed by his father, hence believing it was possible to change his mind. And that’s totally legit since no normal person would be born “like this”, showing such hatred and craving for freedom from birth. In fact, the story shows no other character than Eren who despises the walls, even though he’d been living a fairly comfortable life.
Zeke probably realized in that moment: Eren was never a normal child (Carla: “He’s already great because he’s born into this world). That doesn’t only refer to his character traits and motives, but he even proves that when opposing Zeke in the other world. First, by freeing himself from his shackles, and later when he stops Ymir (Zeke: “It’s pointless, Eren. Once Ymir, the founder begins to move, nothing in this world can stop her.”). This gives two options: Either, Ymir is not the founder, or Eren is not of this world (or both). And since the idea of Eren being the true founder for whatever time-wrecking reason is far too screwed for me to grasp, I’ll stick with the latter option. It could be what Carla refers to as well, and a reason why his titan looks a lot more devilish than any other shifter before.
What does Eren really want?
When chapter 122 “From you, 2.000 years ago” responds to the very first chapter’s title, it seems very likely, that the original message was from Ymir to the present. When Eren finds her, he already knows that she had been suffering and waiting there for someone – most probably him – (“Is it you who led me here? You must have been waiting. All this time.”) and shows deep empathy by going as far as to hug her by choice (at this moment, I can’t remember him showing such affection to anyone else before, but feel free to correct me). It looks as if his intrinsic will to fight for freedom has led him to this single moment of importance, where he frees Ymir from her curse to serve the power of titans.
Interestingly enough, even though everyone knows that she gained back then, no one knows yet what the devil wanted in return. Seeing that Ymir is not at all the almighty deity, but not more than a slave, it’s likely that this was not her wish at all, but part of the bargain she now has to endure “into eternity” (as determined by the first king). Perhaps Eren symbolizes the in-time reincarnation of the devil to fulfil the bargain. But more likely, Eren was created ‘like this’ because he was the first chance in the timeline to enable her liberation (my wild guess is that Ymir herself sent him, but it could as well be the devil, the true founder, a twisted part of a past Eren or all of them at once. I don't think it doesn’t really matter who exactly started the whole ordeal.)
In chapter 122 he finally reveals he wants to “put an end to this world” to do so. He repeatedly says that he will destroy the world, but he never once said he wanted to do it, or that he wanted to kill all the people. As I see it, “putting an end” refers more to breaking the cycle than to committing omnicide.
So. What if Eren had never been in a position to make decisions, but Ymir? It looks like her motives are surprisingly simple, not more than a ‘normal person’s’. All she ever wanted is to be loved. She sacrificed everything, her life, and her humanity – even her freedom to die. But no matter what she did, she was only used for humanity’s (Fritz’s) greed. Over the course of the millennia, she gathered the hatred to destroy the world, but Eren is in no position to stop her because it goes against his destiny. In fact, Eren is quite graphically displayed as a puppet on strings. I think that’s also why Eren acted so strangely around his friends. Ever since seeing the entire future, he had been well-aware that he can’t do anything about Ymir and the apocalypse, but he hopes they are capable of ending him, and he went as far as to insult them only to make their job easier. Already back in ch. 84 when they had to decide between the life of Armin and Erwin, Eren claims to know it will be Armin to safe humanity, not him. This suggest again that Eren does not think of himself to be acting for the right cause, but rather as the (literally) spineless key for Ymir.
To summarize: Seeing just how tormented Eren was by what would happen, how he tried to subtly encourage his friends to judge and stop him, and how he didn't show any semblance of his defining will to fight a future he didn't want, I now believe that Eren has never been the one to make decisions in the first place, but a key destined from birth to only serve one purpose: To free Ymir and end the era of titans. The quote "I was born into this world" thus doesn't act as justification for his decision, but as reference to his key role for the inevitable.
Soo, feel free to prove me wrong or correct mistakes. After all, there’s only so many quotes I remember and it’s natural to see the world with a subjective filter once you have an idea in mind. There are still several details that don’t seem to quite fit, but this is the best conclusion I could draw.
Also, taking this theory further to the present plot of chapter 136 and possible endings, my suspicions are much more vague. But there's one more detail I picked up and would like to share:
Just before Ymir is about to die in her tale, someone says “You’re free”. It would fit Isayama’s sense for loops that Ymir, who had escaped death (= freedom) from being hunted down, now finally ends her prolongued life by being killed (= freed) by Eren Jäger. I think it would give more credit to his name than the usual reference to hunting (more specifically, eradicating) titans.