Fanfic question

[Sam Brown]

I have a question about fanfiction... what is it, exactly?

Heh, just kidding. My real question is this: I've always maintained 
that I'll never write fanfic - I don't have any real reason for this, 
it's just a preference I have. In the last couple of months, though, 
I've been mentally developing a fanfic idea that, in the most 
objective way possible, I can say I'm pretty happy with.

So, my question: is writing fanfic worth it? Should I cast aside my 
prejudices and just do it? I know there are more than a few fanfic 
writers on this list, so I was wondering what everyone else had to 
say about the experience.

Sam