Killing does not equal abuse, ie torture. I have no doubt many slaughterhouses do, but that’s not my fault–its my shitty government’s fault for not protecting the animals and funding efforts to do so.
I still have to feed my cat what it needs. I’m a vegetarian, but biologically I’m not and neither is my cat. Unlike my cat, I have the option to become one voluntarily. Thus, meat is murder and yada yada but Mr. Whiskers needs his goddamn catfood.