I'm less sure about the why. So here are some questions floating around I'd like to see answered:
1. Why do you write fanfic?
2. Are you male or female? Want to describe that further? (i.e. I'm a girl but something of a tomboy)
3. What effect, if any, do you think your gender has on your decision to write fanfic? Are there other more important factors? Less important ones?
4. If it were possible to write fiction and have it published professionally (Sherlock Holmes pastiches, Star Wars tie-in novels, etc.), would you? Why or why not?
5. Do you think your gender has anything to do with <i>this</i> decision? Explain.
But those are just suggestions. If you have thoughts on this topic, feel free to share it however you like. And do feel free to spread the link to this to anyone you know.
I may do a post on this at some point, in which case I may quote comments made here. Or I may not; this may be just for my interest. So if you'd rather me not do that, just mention you don't want to be quoted and I'll respect that.