Fantasy is my favorite genre for reading and writing. We have more options than anyone else, and the best props and special effects. That means if you want to write a fantasy story with Norse gods, sentient robots, and telepathic dinosaurs, you can do just that. Want to throw in a vampire and a lesbian unicorn while you're at it? Go ahead.
Humans are kind of story-propagating creatures. If you think of how we spend our days, think of all the time you spend on entertainment. How much of your entertainment centers around stories? Most pieces of music tell stories. Even hanging out with your friends, you talk, you tell stories to each other. They're all stories. We live in stories.
I started a novel back in high school. It wasn't very good. It was the opposite of good. The writing itself wasn't too bad, and the characters were interesting. But the story was a mess, and it was full of fantasy cliches. Dwarf with an axe. Barbarian warrior. I don't ever think I'd bother finishing that. It's just not worth my time.
I'm obsessive. That's the word for me. I obsess - perhaps to the point where it's moderately dysfunctional. I tend to put a book through about 100 revisions. If anything, that's an understatement. If there's another author out there who does this sort of revision, I would really like to meet him. Maybe we could form some sort of support group.
A lot of new writers assume you have to know the where the story is going and that it flows out as molten gold. But really, sometimes you think you are going to one place, but then you decide that is dumb idea. Then you go somewhere else and it is a worse idea. But then you switch again and you might have a beautiful accident.