MikeB4:
The high protein meat diet is what made homo sapiens what we are now. The protein feed our brains and made it grow. We were successful because we are an omnivore.
This myth gets passed around a lot. We were successful because we are ruthless. Chimpanzees are also known to hunt and consume meat when they can, though it makes up a small proportion of their diet. Today's food choices, both carnivorous and vegetarian, cannot be compared to the opportunistic scavenging of bone marrow from the kills of other predators. What made us what we are now was the invention of farming and the production of reliable food supplies. Meat was just an extra benefit of that.