There's a joke in my writers group surrounding unhappy endings in books or films. Several of our members can't stand it if a story ends without resolution, or in a sad and/or depressing way. As we like to say, their stories have to have "Rainbows and Unicorns". I am one of the few who actually enjoys melancholy storylines (as long as they're done well) and thereby, I often have to give a "no rainbows and unicorns" disclaimer when recommending books or films.
You can understand why this made me giggle.