I always thought Eren as annoying hot tempered edgy boy, kinda get on my nerves sometimes. Turns out he turned that way because he saw the future. Can't say he chose the best decision to wipe the Titan power. It shows after a long time pass the war keeps happening and the Eldian kinda hopeless without the Titan power. I can't find the best solution for this conflict between Eldian and the world, it has been going on too long. People pin to the idea that Eldians are monster, there is no way they could think otherwise with the history like that and Eren's genocidal action.. Ymir power only has effect on Eldians, which is useless at this point if you want to achieve peace. It is not like you can wipe off all human beside Eldians, and not like you could alter their memories about Eldians. Ymir power more like a curse rather than God tier power.