I’m not going to do the work of looking for links that explain how easy it is to get the proper nutrition on a vegetarian and vegan diet. There is so much information out there that just proves you wrong: movies, books, articles. Do some research. (Though I expect you won’t because you want to hold on to your ideology that isn’t supported by facts.) Anyone not thriving on a vegan diet is doing it wrong, or they have certain kinds of medical conditions. You can get all the nutrition you need from plants, except for B12. I mean you could, you’d just have to eat way more veggies than one could actually consume in a day, which is why vegans and vegetarians should take a supplement. And before you say, “oH yOu SHoUldn’T HAve TO taKE a suPpLeMenT,” Omnivores need to take supplements, too.
Also, yes, we did evolve to be omnivores, but not to eat cows, chickens, pigs, etc. We are primates. The only animals we should be eating, if you want to talk evolution, are bugs and insects. I recently read a few articles that argued most early humans were vegetarians and another that indicated it was eating bugs that helped humans build bigger brains.
Now, I know fluther “experts” love to spout ideas not supported by facts, but when you are just flat out wrong about something that to me is a moral standing, expect to be confronted.
And my favorite nut is a walnut, then cashews.