Your point has nothing to do with the human body. It's not necessarily naturalism, it's what your body was made for. Having guns, slaughterhouses, or a 6.6billion population is not a logical reason to try and change what your body needs. Most of us eat the vegatables anyway, so we get what the body needs, and just because the meat isn't "natural" doesn't make it bad for us, so theres nothing wrong with eating it. You seem to be thinking we only eat meat.... And also, the arguement of we not being real meat eaters because we cook it.... Then you go eat your vegtables straight out of the ground, without boiling or cleaning them. Tbh both of them taste better cooked, which is why we cook them (and of course kills the bacteria and stuff). I don't see how cooking our food makes us vegaterians, lol.