Comment by swiftcoder

> would just mean we'd stop replenishing them

Keep in mind that we already have to perform widespread culling of wild animals in this category. Having eliminated most of the apex predators, we're on the hook to keep populations of wild horses/cattle/deer/etc in check.

If we cease to use domestic animals, they end up in the same boat - we're no longer paying to feed and house them, and if they are capable of breeding in the wild, they will breed unchecked. Leading us to cull them, ad infinitum