How do religious people justify raising and slaughtering animals for food?

[Shell B]

I think the point isn't that religious people have to justify it and non-religious people do not. I think the point is that your moral compass is inherently different, as it has to factor in god, biblical teachings, etc. It's not a question without merit. How do you justify killing and eating animals as opposed to how atheists do it? Is it different? Does god care? It's a fair question. He did say he can't justify it, so it's clear he's attempted to and come up short.

In that case, I can only speak for my own faith and say that we do not consider it sinful to eat meat. So, justification isn't necessary.

Well, you've kind of justified it by saying it isn't sinful. That's your justification. As for me, I justify it on basis of being hungry and liking the taste. If that's not good enough for veggie types, tough.