I don't write fan fic anymore but I write fannish original fiction (original characters with all the indulgences, uh, style and themes of fan fic) that I'm not writing for money, either. I write it and wrote fan fic for fun. It's a hobby. I don't need the money. Someday, I hope to be pro published for science fiction novels I'm writing with a collaborator, but again, for me, money isn't the issue. Publication, name on the book cover and all that, is.

Sometimes, I think some people view writing as hobby as a bad thing. I don't understand why. One of my friends who also wrote fan fic rather make money from art than from writing, tho she continues to write and is quite good. When it's a hobby, we don't need to take it too seriously. :)