My view and reasons for them. Atheist and Christians welcome here. (short)

[Astreja]

{Lack of belief} comes naturally when you listen to wild-ass claims about things like people coming back from the dead, magic trees, and Talking Snakes™ and then realize, much to your shock, that some people believe those things are real.

Again, I would say this is believing in an antithesis.

From my perspective it was never a decision to disbelieve.  I just found religious ideas unconvincing.