Sometimes I think a lot about what we know about The Dark Lord's character and how that may or may not relate to what he's experienced.
Like, right off the bat in AvA 3, this is a guy whose life starts during a currently ongoing fight, is told that his purpose is to join that fight, and when he loses, is prompted to start fighting again. For the first 5 minutes of his existence, the only thing he is exposed to is violence.
I think about how his first instinct in Minecraft is to destroy everything even when Chosen has already discovered that there's another way they can interact with the world. I recall how in AvA 3 when he starts playing Minesweeper, the one and only time he tries engaging with something non-destructively, it ends up biting him in the ass. How much later, the very first time he creates something—even if it is a means to further destruction—he gets told it's wrong.
I think about how, when Chosen spares him, he doesn't tell Dark that trying to kill him is wrong, he points to their uncaring creator. The lesson isn't "Fighting is wrong", it's "Don't get tricked into fighting for someone else's benefit." I wonder how it felt when that same person told him he needed to stop fighting. For someone else's benefit. The one person he stops fighting for years suddenly switches sides without any prior warning.
This is probably all verging on headcanon, but...
His reason for being is violence and conflict. He finds combat fun and exhilarating, but combat for him has always been with the aim to destroy. Nothing has ever taught him that an alternative to destruction is anything good. He has been thoroughly conditioned to be the way he is.
God I wanna see a redemption arc for him done well. What would it take to bring out the parts of him that built such a versatile tool like the Virabots, that started playing with a logic puzzle in the middle of a fight, that saw beauty in the hellish pre-1.16 Nether, and channel them into something good? What kind of person would he be afterwards?