Sorry but this is the most ignorant excuse I have ever read for eating meat.
Naturally humans are omnivore. Not to get the best of both, but to give us a better survival chance in the WILD. Not in cities where we can buy any food product. There is no nutriant or anything you can't get from other sources that you get in meat. Fungi, soya beans etc etc all supply the same nutriants as meat.
How is slaughtering millions of animals every day and pumping out millions of polution natural?
Hunting your own food for survival is natural. Over Farming (industrial farming) is not the same thing at all. To even think it is, is downright stupid.
I'm not against eating meat, people can do what they want. But to use the "natural" excuse is jsut stupid. Especially when you eat animals that are not naturally kept and pumped full of unnatural drugs.