Veganism

[Thumpalumpacus]

For most of human history people starved on little more than bread.  I think that anyone who wants to change the way we view or eat or produce food ought to be careful invoking a mythical past where people were Just Fine Thanx without all the food options we have today.  Even today, with them, food insecurity is still a huge issue.  Nothing about prehistory, or written history since, suggests that the people living such lives were comfortable with that lot.  

It is weird and cultish, btw, to assume the things casually suggested so far account for why we raise livestock.  We obviously care more than any other species and more than at any other time for our own species and the meat industry tricked precisely no one into enjoying steak.  We haven't gotten there yet but it's pretty much inevitable that someone suggests self righteous suicide for our species as a "solution"...to cruelty.... - which would complete the trifecta of - "everyone else is a monster - the world is run by an evil conspiracy - the solution is this here kool-aid".

The Lakota or the Blackfoot thought nothing of stampeding a couple of hundred bison off a cliff to strip them for roasting, making jerky, tipi shells, coats, bowstrings, water-bottles, sewing needles, warrior decorations, tipi-ties, and more. They also saw themselves living in harmony with nature. Not sure those bison would agree.

They still had folks out gathering plant-foods, weiring fish, and so on, too.

As noted above, even vegans support an industry that kills animals for their own dietary preferences, albeit indirectly, which still undercuts the moral arrogance of some of them.

I'm not sure there's much morality involved in feeding.