...And how exactly do you think people are going to be able to eat meat otherwise? Or have dairy, eggs, wool, etc.? Do you think that people should e.g., raise chickens in the city?
And that's ignoring the small obligate carnivores that make up most of the pets in the world.
Hey, I'd rather hunt my own food too, but we no longer live in tribal or feudal societies where you can reasonably expect to engage in animal husbandry yourself.