True, some proteins are only found in meats, but they certainly aren’t necessary. And there are proteins much better than the ones found in meat, which have a lot of fat in them. And not eating animals saves their lives. I don’t know how you can eat a steak without thinking, “This came from a cow, which was born and raised just to be eaten by a human, who doesn’t give a darn about it’s life. Animals eat each other because they don’t know any better, and they don’t have access to grocery stores or markets.