I was thinking about this the other day, and it occured to me that there isnt a single story in my arsenal of about 40 that has a happy ending. I hate 'good-guy beats bad-guy and gets the girl' endings, so I try to be original with them, but in most of them, the protagonist either dies, or loses the final showdown, or is outwitted or in some way beaten. The only one that has a vaugely good ending is, er, not appropriate. For anyone. I also tend to leave a lot of questions partially unanswered, deliberately. Does anyone else use common themes with their endings, or is it a mix and match kind of deal?