Since you brought up atheism, that reminds me that people are taught to believe that it is reasonable to believe that god exist. They didn’t inherit that. They learned it.
I don’t think I’ve answered the rest of your post. It would be interesting to see if an adopted child of a religious fanatic brought up in a family that encourages the child to think rationally might one day decide that the universe really looks as if it was designed. I am inclined to believe he/she would.

It’s I am. Don’t ask me what that is, but it is found in Hinduism, Judaism, Christianity…