Humans don't need to eat meat... Proved by millions of people in the world.
I have a much better diet than most meat eaters that I know.
Talking about human evolution now? So why don't we still have slaves? More technologically advanced humans were made like that so they could enslave the less advanced humans? Cannibalism?
Its not about what humans are can do... it what humans need to do to live - eating meat is not required to live... just like cannibalism.