Watched this last week on preview dvd. Depressing and by the end a bit creepy. But I'm glad I watched it. Art's funny like that!
That could be its definition, actually, or one of them: art as the suffering you put yourself through voluntarily. There's so much unavoidable misery in life... how strange that we seek out avoidable misery.
Re. unhappy endings, case in point: this film. A favourite, even though the last time I watched it, defences weakened by drink, I felt like bashing my brains out against the wall afterwards. Yet I know at some point I'll watch it again.