>>> there were books that argued that humans had evolved to be intrinsically warlike

Let find the point in human history where the threat of physical and sexual violence wasn't massive relative to now? We have rules for fucking war because with out them we will rape, pillage and salt the earth in our wake. We raped and murdered our nearest cousins (neanderthals and denisovans) into extinction. We are war like, the dominant monkey gets to reproduce...

> So if you want to eat meat, knock yourself out, but don't do it because you imagine a caveman did it.

B12, let's take that out of your diet, take away the meat, eggs and dairy and see how long you live. Oh wait, you need that to live and meat, eggs or dairy are the only source of it.