When you are vary young you believe every thing your parents teach you. The more hard working and honest those parents are the harder it is to second guess them. Some people will never bother to learn for themselves. It's to easy to just go on believing. So it's learned but some people will never learn.

If religious belief was innate, people wouldn't start out with their parents' religions. The propensity towards belief may be innate though.

All things are learned.

Sounds like my life, except my mom isn’t as bad as that. With out indoctrination, I think it is innate. May have to be learned by some, though. Idk

You can have an innate understanding that what they teach you is nonsense. What you learn can trigger a deeper, and more deliberate, understanding of reality. Using your head.

I have had the feeling that there are two types of people, those for whom a god is natural, and those who are skeptics. Think I was born a skeptic, and wanted to question everything. At a fairly young age didn't believe in tooth fairy, easter bunny, santa, and god. Now, my sisters just seemed to accept god. (this is a non-scientific answer). Think it is innate, but can be learned.

We have an innate tendency to seek and find patterns in random things. In addition we apparently have a 'god spot' in our brains. So, I think we are predisposed to be susceptible to religious indoctrination.

The innate tendency is to "anthropomorphise " mysteries. Learned is to apply logic, based on already discovered facts. Reasoned is to take known logic and a sense of the innate in order to leap forward to new fact.