Abedeus said:
If humans were to eat only vegetables, I think our ancestors would just stay in one place and grow crops instead of moving around and hunting for animals. I mean, an animal might attack, hurt you! Most of the plants people grow for harvest can't hurt you, unless you shove them up your nose.
Humans are omnivores! You can't make a lion eat only grass and vegetables or turn a cow into a blood-thirsty monster. Just like animals' bodies need what they need, we need both vegetables and meat.
Yeah, but we don't need to eat meat. We can get along just fine with vegetables and beans. Indian food is mostly vegetarian, it's primarily the West that's bought into the heavy meat meals. The problems come in when people assume they can just live off of salad. Lettuce doesn't have much in the way of protean, or anything besides water, but broccoli and beans do.
We're not lions - we can live without eating meat. Making appeals to our ancestors is pointless, because they did all kinds of crap that we wouldn't tolerate in our society. We can make choices. We have options. We can think for ourselves.
It doesn't matter, for the sake of our morality, what our ancestors did. We're here now. We're not going to go backwards if we eat plants instead of meat.