You don't see that most proof-of-stake still requires a tremendous amount of energy and resources wasted at the very least for the stupid mining process?
I thought this when I first learned about the idea, but the name doesn't give away the true nature of, at least, most implementations... It's like 'mining requires less energy', and not that the tokens aren't mined at all.
Of course, theoretically you could've an initial distribution defined and shared without effort, but what really happens is a points system that makes it easier for people to... uh... mine, but it's obviously still the same awful idea.