I feel similarly about the "twist" that "it was just a dream!" or something similar. It's already fiction. It's already made up. If I wanted to be stuck with just the stories & endings and such I could make up, I wouldn't be coming to you for a story. Not that there isn't room for ambiguity or complexity or anything, but, I already know what I think. I'm here precisely to find out what someone else thinks, and "well, what do you think?" is not very helpful.