I agree with what has been said. I eat meat as long as i don't (or anyone else for that matter) remind me where it's come from, although there are meats i will def stay away from e.g Veil, lamb, pheasant, rabbit etc...
I would never give my cats a veggie diet, their carnivores by nature and need meat to keep healthy and strong. You can't deny them that at least. As has been said, if people don't like the idea of giving their cats meat, get a rabbit.