[DracIV]

Okay, I'll respond to you The Q. It wasn't exactly a weak jaw that did it, nor brain size. It was brain complexity and luck. For many millienia humans did what all animals do. Because our natural predators died out, we grew like the plague. The same thing is happening recently with deer in suburban forests and cats in cities. We are omnivores (more adaptable), so that's what we did.

Now people have a choice to be herbivores. However, meat is considered a luxury. That's the important part. Meat is harder to get and more expensive because it is a luxury food in my cultures now. Similar to salt for the Romans (such a luxury that they paid soldiers with it). All cultures have luxury foods and people usually don't care to remove those, whether or not anyone thinks they should. Although beef and steak (the main luxury choice in America) have become more widespread due to a strong economy and lots of money, it is still something special you don't eat every single meal of every single day (unless you are one of those fastfood fatties).