[DeepSeaTortoise]

It only has been a "norm" for a few thousand years during the agricultural era for the poorest of the poor, who could neither obtain hunting privileges, afford to keep their own animals, had no access to food, work or communal programs, which provided them with some meat, or there were significant famines which made the culling of livestock necessary.

Beyond that I'd argue we should strive to minimize class-based access restrictions to food rather than artificaly enforce them.