icarusancalion

I think part of it is that the longer you're in fandom the more you realize how many ZOMG SHINY fandoms there are. And you want to write about one without leaving behind your favourites from the other. Or you want your One True Characters from each show to meet each other because damnit, you love them both. And more rarely you want all those people from the giant fandom to see how awesome your smaller fandom is.