I use my fiction to explore my own unconscious issues. I usually don't even know what's going on with me until I'm writing. That doesn't mean my books are autobiographical.
You learn emotional experiences as much as you learn cognitive experiences, except that they are more unconscious. Sometimes one represses the cognitive component of it, but it's often more difficult to repress the emotional component.
In my own life, I think legends of supernatural, mythic things are really just a manifestation of the collective unconscious. So I don't really get freaked out. I mean certainly, you read about things people did to each other in the pursuit of some mystical or occult goal, and it's horrifying. But that's just human nature.
It's common knowledge that professional athletes earn extraordinary incomes. What is less known or understood is how the advent of these riches has seeped into the conscious and unconscious ways in which our society now parents children.
Occasionally if I look back at something I've written I'll find one of those that I don't understand, but that's a bad thing - the unconscious has dealt me a bad hand.