I just sent another essay off to Strange Horizon. It's about fan fic, and I ended up wondering why I don't write fan fic. Friends do. I have in the past, the distant past at this point. I have written fiction about people who write fan fic (the hwarhath playwright in Ring of Swords) and people who cosplay (the hwarhath translator in "Holmes Sherlock"). But I have some kind of hostility to writing within a copyrighted universe.
I would hate to believe the reason is snobbery.