Most of the films mentioned I’ve never seen, and, knowing the subject matter for many, have no interest in seeing them.
I really don’t want to go to the cinema to watch a film to be depressed or upset; a mate and I and our girlfriends once went to a double bill of, IIRC, Electra Glide in Blue/Midnight Cowboy, and we never saw the whole of Midnight Cowboy, the girls couldn’t cope. (They were both still at school, so asking a bit much, really. And seventeen/eighteen, before anyone asks).
One film that, having seen, I cannot ever bring myself to see again, is Pan’s Labyrinth. Fantastic film, incredibly well done, but the brutality and sheer malice of certain humans left me with such vivid memories of it that I can never see it again.
The Lovely Bones. I did actually want to see this, but didn’t in the end, because the reviews were poor, but having read the book, and knowing how the film goes as a result, I’m not entirely certain I’d have really enjoyed it anyway.
The Grave Of The Fireflies. I absolutely love Studio Ghibli and Myazaki’s films, but I know the subject, and there’s no way I can bring myself to watch it, and a mate who has said it’s heartbreaking, and wouldn’t, couldn’t watch it again.
I’ll be perfectly honest, I watch films to be entertained, and to enjoy the experience; finding myself upset, or appalled, at whatever goes on in a film kinda defeats the whole point, so I always check out a film and avoid if I know it won’t be enjoyable.