Does anyone else create elaborate fantasies, working themselves into various fictional stories?

Question

This is just a random query, but for as long as I can really remember I have used various established stories such as movies and book series, to create elaborate fantasies in which I am essentially a character in these stories. These fantasies to not manifest in hallucinations nor do hey affect my life in any significant way. They merely provide me an outlet to imagine myself in these fantastical worlds. I was curious whether this is something others do or if I have a bit of an overactive imagination.

Answer 1

I did it as a child.

Answer 2

All the time. It's called fan fiction.

Answer 3

I did when I was like 8 years old. Not saying that in a snarky way, it's just true.