Quote Originally Posted by Splash! View Post
Actually, you WOULD have to kill everyone at least once if you want to make all of them immortal, even if you daisy chain it. You can't be resurrected as an immortal if you haven't died. Plus, if you want to bring back people from the past as well as make everyone in the present immortal, you would need more bodies than there are people...

So yeah, the moon eye plan has considerably less hassle and works better overall.
You don't have to permanently kill everyone, just put them into the Edo Tensei and immediately resurrect them. It's not "death" it's more like a surgical procedure you go under for.

The Infinite Tsukiyomi would end the human race, not create a utopia, since everyone under the genjutsu is going to die of starvation pretty quickly.