Christian reaction:

Oh yeah, so you are allowed to just run around raping and killing blah blah blah.

Yes, because that’s how every single culture worked before Christianity became a thing.
/s

I love Penn Gillette’s answer to this:

“I’ve raped and murdered all the people I wanted to.”

I use variations of that all the time.

Of the threat of eternal damnation is the only thing stopping you, you’re a bad person.