
After I watched the last episode it is really clear Eren is only an EVIL KILLER ! his freedom was stolen only by the marly and the politics who gathered to wag a war on paradise so why kill all these innocent people 80% of humanity to prove what ? I really wished he could survive to get punched.

To save the Eldians, Paradis Island, and for his friends to live a long, peaceful life. It's to kill or be killed. This is war. Innocents will be killed either side.
And he chose to prove to the world that the Paradis Island shouldn't be messed with and that the blame can only be on Eren.
Also, he has seen this future and he can't change it. He has no other choice.

dude did you not watch the show/ read the manga? The world was about to wage a war against Paradis. With Marleyan's superior technology, Paradis stood no chance man. The options on the table were - waging war against the rest of the war and euthanization (Zeke's plan). As long as Titans' power remains, Paradis would always be the enemy of the world.
Spoiler
This is actually so stupid I regret reading this manga so kaname die to let yuki live then yuki die to revive kaname then he return her heart to revive her then die together!
I was waiting for kaname to have a family and live happily ever after it’s really absurd
Yes indeed. I really wished for a more happy ending for Kaname and Yuki. I mean I guess the consolation prize was for them to FINALLY meet again after all these sacrifices they made for each other in the past and so finally in the present they meet again and die in each other’s arms…I guess it’s poetic in one way but truly heartbreaking even though they were smiling.