Most personally convincing reasons you don't believe.

[Pat Mustard]

Going back to the OP, I would say that my confidence that the specific god characters mentioned in the Bible/Quran etc. are fictional is as close to 100% as makes no odds. I'm as confident about that as I could reasonably be about anything.

I'd wager my life against a donut.

Trying to get back into the thread now, I agree with that but you come from a very different perspective... well almost very different. I'm like you are for every other religion other than Christianity... can just dismiss it out of hand as a bunch of silly, made-up characters... but since I have a background in Christianity I can't do that here so much, though I wish I could, believe me. If I hadn't grown up with it I'm pretty sure I'd see it just as you do, and just as I do about other religions, but as it stands it's too deeply entrenched to be able to treat it like that, and needs something more. Tbh I think it probably needs a psychological intervention - somehow - to defeat rather than reason alone. The question of how to unlearn something... the brain moves forward so (imo) when you forget something, you only forget how to trigger it, not the actual thing... so it's still laying there dormant even if you no longer think about it.

I'm a lot luckier than you, as soon as I junked christianity I never looked back, never had doubts and am not plagued by voices telling me I was wrong. The closest I've ever come is using the phrase "bless you" or Jesus as a swearword on occasion.