I learned the absurdity of the concept of an all-powerful creator very early, though I didn't quite know it at the time.

An elder told me a story when I was a child about two men, one who accidentally injested glass shards and another who injested a cleaning solution. God was apparently able to pick the glass shards out of the first man one by one but was unable to save the second man, because floor cleaners are supposedly harder to extract from the digestive tract.

Later in life I learned about logical fallacies, about the one in particular that asks 'can an all powerful supreme deity create an object so heavy even he/she/it can't move it' among others, and ever since I've been adamant in my resolve to insist on sound evidence whenever anyone makes a truth claim about the supernatural. It usually boils down to feelings being the only criteria they need for belief getting accepted as fact, but that never passes muster for me now that I know about confirmation bias. No evidence = no god as far as I'm concerned. And if they try and say the bible is proof of god, I point out Isaiah 45:7 and then tell them that if the bible is evidence for god then The Sorcerer's Stone is evidence for magic, wizards and flying broomsticks.