[ Midorima stays quiet for a moment, but as he thinks about that.. ]

The only way to stop war is to stop conflict, which is created by free thought, and completely stopping disease and pain would result in rapid overpopulation, starvation, and extinction.

[ like where is he going to get food and water for all of these people who aren't dying anymore ]

It's a naive world that only exists in the fantasies of those who don't understand that actions have consequences. You're not wrong for disagreeing.

[ There's a reason the word "utopia" comes from a word meaning "nowhere." ]