The very idea of a person believing murder and rape to be horrible without a convoluted and often contradicting spiritual belief system is preposterous to them. Hence "rayiner"'s insistence that not treating people like shit simply must be a religious concept because "it sounds religious". These people genuinely believe someone not treating people like shit can only happen if you're terrified of going to hell or something.
They're somewhat rare but not rare enough. They're extremely dangerous people because, after all, the only thing keeping their desire to harm others in check is a fear of an ever elusive supernatural entity punishing them, instead of just simply not having such a desire.
Maybe the above isn't applicable to "rayiner" but people who say not treating people like shit "sounds religious" are almost always that type.