It's all the dead-bodies you're eating.
It should be intuitive, you come up on a dead body (Cow, Chicken, Pig), you have NO DESIRE to eat it.
It is only through a technological, artistic exertion of Manual-Repackaging, we cut it into geometrically simple blocks, Change the name from CADAVER to BEEF, then cook the majority of its base taste/texture/flavor out of it, SEASON it with VEGETABLES, until it is completely un-recongnizable from the Origin of the material, such THAT MAN could ever find MEAT palatable.
But, here's the thing, You're still eating a dead carcass after the fact, something completely counter to our HUMAN-nature.
Is it not then OBVIOUS, where ALL OF OUR PROBLEMS come from.