One needs to decide if an animal is a product or a pet. It's difficult to have them be both.

Having them as a product does not mean you don't care for them, on the contrary, but I would say it's a completely different type of bond.

> But then the question should be is it just the "bond" which is holding someone back from killing animals? Why can't we just not kill without relying on bonds?

I would argue it's about the purpose, not the bond. You don't kill a pet, but you do kill food. And you should never kill for the sole sake of killing.