Almost every human being started believing in god(s) because they were introduced to the idea by their parents or other family members or teachers in stories and rituals and songs, usually long before they had the capacity to focus on objects more than two feet away. Every human society I’ve ever visited is saturated with the trappings of some religion or another, often many, and the messages and symbols of history’s many mythologies resonate in everything from the architecture to the money.

Those who don’t believe are usually the ones who have changed their minds, not the other way around. It’s not surprising that some number of those change their minds again.