I'm the type of player who only goes for happy endings in otome games. I don't do bad endings, if a game forces one on me, I'll just pass. For me, gaming is all about joy, relaxation, and those sweet moments with the characters I love.
I'm a soft-hearted person. Even rejecting a character I like is hard enough, so I definitely can't stand seeing him suffer. If I'm suddenly hit with a tragic ending without warning, I'll probably hold a grudge forever. And because of some 'memorable' past experiences, I usually double-check beforehand to make sure a game has a proper ending.
That said, I don't only play fluffy games. I'm fine with drama and angst along the way, as long as it leads to a truly happy ending.