When arguing about "morality" with a theists, clarify morality as things that please their god. I usually resort to their "moral" god being OK with slavery and human sacrifice of Zephtra who killed and burned his daughter because he made a deal with God because their god of morality gets off on the smell of burning flesh. Yes, Killing and burning your daughter is moral because it pleases god.

Morality was neither invented by, nor nurtured by religion. Religion simply appropriates it.

Morality is an emergent property of society. It is the product of the implicit and explicit negotiations of everyone concerning the kind of society they want to have and what sustains or undermines those goals. It is, ideally, driven by empathy and has the objective of a civil, stable, peaceful society.

Theism actually undermines morality by using god's alleged commands as justification for random actions -- untethered from the actual effects of those actions.

I have no morality but I do have scruples, it works for me.

You nailed it. Even when I found some acceptance of god, i believed he or she or it could have no power to interfere because if that god did have the power to cure sick kids and didn't, then that god would be a bastard beyond any f'ing sicko one could imagine.