The genre; not the daydreams.
I was obsessed with the fantasy genre for the majority of my childhood. Aside from the usual dalliances into young adult drama and Are You There, God? It's Me, Margaret to get all the "answers" to my burning questions, I devoted myself entirely to talking animals and people with wings and creatures that spoke made-up languages. Ironically, I've never been able to finish a book in the Lord of the Rings trilogy - I only read The Hobbit in sixth grade, for fun. I remember doing some kind of kickass book jacket for it. I drew a dragon.