And, as much as vegans wouldn't want to admit it, if the
human species returned to a more literal Paleo picture — actually hunting for actual wild animals when
necessary (and eating them fresh), making animal foods just a
part of the overall
diet, and eating no refined plants (like white flour or white rice, which don't exist in nature), a couple things would happen: (1) we could put an end to the horrific treatment
of animals in the factory farming industry, and (2) the environmental devastation that results from our current food production model would be substantially minimized.
Paleos argue that meat was an essential
part of the early
human's
diet, and many vegans argue that while our species evolved eating flesh, it's not
necessary when plants are available.