Personally I sometimes like happy endings, but I keep it to some degree. If you have some of those phony endings that look like the writer took 15 to write because he hates his job, then I go "WTF". Then there's those stories where you really expect/want the bad guy to win, yet again due to bad writing, or just the way the storyline goes. Finally you have the very few times when they actually do things right for once and have a *good* ending, either where evil finally wins, or the good guys win, but either way where there's the sense of that-was-worth-watching/playing.