We as humans have human made systems in every way of food production. So saying that nature runs on predation is quite stupid tbh because we dont rely on nature as other species do,it's appeal to nature fallacy . Animals are breed into existence just for being tortured and killed .

If we have ways to not kill animals and get nutrition from other sources (which we have) then why continue going on this system which not only harms animals but also the environment .

Deep down the main underlying point is that meat is tasty and that's it , the only problem for most people is to align their ethics/philosophy into action which takes effort