Nick Zangwill in Aeon:
If you care about animals, you should eat them. It is not just that you may do so, but you should do so. In fact, you owe it to animals to eat them. It is your duty. Why? Because eating animals benefits them and has benefitted them for a long time. Breeding and eating animals is a very long-standing cultural institution that is a mutually beneficial relationship between human beings and animals. We bring animals into existence, care for them, rear them, and then kill and eat them. From this, we get food and other animal products, and they get life. Both sides benefit. I should say that by ‘animals’ here, I mean nonhuman animals. It is true that we are also animals, but we are also more than that, in a way that makes a difference.
It is true that the practice does not benefit an animal at the moment we eat it. The benefit to the animal on our dinner table lies in the past. Nevertheless, even at that point, it has benefitted by its destiny of being killed and eaten.