One of the biggest things I believe is what people define as "god" and when that definition ends up being very different from their experiences they then say "god isn't real" based on everything they learned.

Instead of defining god as something like "the total of all truth in the universe" they define it as "a single being that has power over everything" it doesn't help that there are many personifications of god to help people like rural peasants understand the concept.

One of the biggest things I believe is what people define as "god" and when that definition ends up being very different from their experiences they then say "god isn't real" based on everything they learned. Instead of defining god as something like "the total of all truth in the universe" they define it as "a single being that has power over everything" it doesn't help that there are many personifications of god to help people like rural peasants understand the concept.