[Darmody]

    People didn't adopt that principle because religion told them to, they adopted it because it allowed them to outcompete the primitive societies that didn't.

But the divine nature of mankind makes that commandment more powerful because, one, you're killing God's creation and, two, it directly comes from God. It is not a simple "yeah, lets agree on that".

[xabotage]

In the end it's just falsely attributing divinity to pro-social human programming developed over millennia of natural selection. Religion came much later than pro-social behavior, and in fact it more resembles "let's agree on that": When it serves you, quote the bible verses that forbid killing, and when it serves you, quote the verses that justify killing indiscriminately.

[Darmody]

That's what I used to think.

I'm not so sure anymore.