I have some possibly shocking news for you. Humans are animals. Pretending we're very special and that everything we do is automatically "bad" is silly. Some things that are very good for humans overall is bad for competing species. Everything in moderation, of course, but I'm not shedding a tear for cowkind that they get slaughtered a lot. Cows would undoubtedly set up a system much like this if they were smart carnivores and we were dumb herbivores. (And many of them would hand-wring (hoof-wring?) about it due to that smartness. It's just part of the package.)