Where do atheists get their morality from?

[Whateverist]

The bottom line is, we don't know where we get our morality from.

All we do is appeal to phenomena that sounds like it might explain morality, and we confidently declare that we have a source of morality and it is good.

But really, at the end of the day we have no scientific evidence for it. Just call our bluff and watch us squirm.

So we don't know where we get our morality from. So what of it? We know what we feel and how we think, but we can't trace all of it back to a specific source. We don't with certainty know which is mom's influence and which comes from elsewhere . But why does that matter to you?

I can already hear you asking but what's to stop the serial killer from thinking their moral sensibility is trustworthy. Perhaps you'd like to think that there is some rational procedure which would allow anyone to determine whether what they think of as moral really is so. Any one who would like to grapple with such a procedure already shows that they have certain pro-social inclinations. So I guess we all just have to deal with that doubt .. unless we choose to drink the kool ade.