You forgot the best oneSo , I ' m going to take a different approach than maker of the videoHe posits that ' s we don ' t eat people because it is morally wrong . I don ' t disagree as a member of western civilization but there are societies that would from a ritualistic perspective . THAT SAID , he ignores another reason that we don ' t eat people is biological . Consumption of human flesh is linked to infectious prions diseases in humans I . e . There is a sound biologicalnatural argument against eating other humans . So , that being the case , is there a similar argument to made for consumption of animals I . e . Is there a legitimate biological outcome whereby eating them explicitly harms humans ? As far as I am aware , while overconsumption may be a problem , there is no animal that we can say eating X animal is definitively tied to killing people . So , if we accept that as true , then we know nature isn ' t holding up a stop sign that says don ' t eat other animals , why is it okaydo we do it . Here , I will argue is because the answer is because that IT IS natural . Despite our selfactualization and higher levels of reasoning , we are still part of the animal world and share all the same qualities as the animals we consume I . e . Metabolism , reproduction etc . We are not morally bound to not eat animals , especially since I don ' t believe other animals even have the concepts of morality . That said the treatment of animals we slaughter for food and how humane that slaughter is a worthwhile and I know contentious debate .