If you live in Tibet or any other 4000+ meter environment where growing things is quite a bit more difficult, and you don't eat meat, you die. Say whatever you want about the Chinese, but the Tibetans do very much welcome the fresh vegetables that they can now get via better transport links and internal trade.

I visited north Xinjiang once, and was quite over-exposed to meat so much that I was happy to get back to lower elevation lands where I could actually get some vegetables again.

So what about medical treatments that save lives but have yet to be invented? How is humanity possibly surviving now when there are still medical conditions that lead to death?

If you don't eat your meat, how can you have any pudding?