When I watch AG, I really wanna be on the Old Gods' side. They're the underdog; everybody loves an underdog. But, when I actually think about what is going to happen (all the potentials and whatnot) I can't help but laugh at Odin.
The Old Gods aren't irrelevant; they're just not as prevalent. When Odin talks about why he wants this war, I feel like I'm listening to an old man try to convince people to fight for something that doesn't matter anymore.
The New Gods offered him and other Old Gods a place in the modern world. They should take that (even if World's proposal for Odin is inherently flawed when you actually look at what he promises, but I digress). The Old Gods need to adapt; that's how humans have stayed alive for so long, by adaptation. Too many Old Gods are stuck in the past and that's their problem. They need to grow and adapt like the New Gods have and are offering. Yes, these adaptations may one day be obsolete, but that isn't the point; you can adapt again, but you can't come back from the dead.
I understand the Old Gods are old and, much like many older generations, are stuck in their ways. Here's the thing, many older and old people do adapt to the modern-day and all the things it comes with. Take the Old Gods, Easter and Vulcan, with help from the New Gods, they were reinvented and relevant again.
Isn't that the purpose of all gods? To be relevant. To be worshipped.
The New Gods may be assholes, annoying, and sometimes promise things that can't happen the way they say it will (I am looking at you, World), but they're right.
The Old Gods in the US can be stamped out. The New Gods can't without a complete destruction of life in the US as we know it. A massive, catastrophic event would be needed to shut everything down. The Old Gods aren't capable of that. Not anymore.
As World said in S1 Ep8: "We fight, we win. We don't fight, we win." and Technical Boy says: "You die out either way." This isn't just them being cocky assholes, this is them being factual.
The Old Gods aren't as worshipped the US as the New Gods; they aren't as relevant. Even their worshippers still use technology and media and are a part of globalization. The New Gods are unavoidable. Even the Old Gods can't avoid worshipping them in some way.
When you actually look at what each side is, has, and is offering, the New Gods make the most sense. They have more power, more influence, and the more logical stance. The Old Gods don't stand much of a chance, especially in the state they are in now.
Like I said in the beginning, I really wanna be on the side of the Old Gods, but logic is pointing in the direction of the New Gods.