I don't think one can exist since in such a place people would have to stop being selfish and such a thing would have to somehow be removed from human nature. It's something that would have to leave since it's the one thing that has caused a shit load of bad things and has left us to where we are today, so get rid of that and you will be close to a perfect world.
Although, that kinda goes into some implications that are rather questionable, but that's a whole other discussion.
Anyways, I suppose for me a perfect world would be a place where everything isn't complicated and everything makes sense; everything has a clear reason for happening, so that kind of thing.
I wouldn't be as miserable and I wouldn't have to bust my ass for something that I may or may not get, but I suppose that would take the fun out of life, wouldn't it?
Also, I get to eat as many burritos as I want and I don't suffer any consequences for it, and they are the best burritos ever.
