Wasn’t any aignifigant specific event for me.

Juat a slow process of increasingly recognizing that thw whole thing is man-made.

The more questions I had, the more inconsistencies I noticed the more I learned and researched, the less plausible the entire thing appeared.

.

But, I guess if I have to identify one starting point, it was probably thinking about the implications of “one true church” / “one true religion”.

Every church/religion makes some variant of that claim, and obviously only one of them can be correct in that assertion, but they can all be wrong about it. Which led to “what else are they confidently wrong about?”.

Turns out the more you look, the more wrong things you can find.