The notion that art can't be "good" if it makes people feel good is really misguided, in my opinion. People turn to art for all kinds of reasons, but most of all because of the satisfaction involved in consuming it. Even if a story is tragic or explores sorrowful experiences, we derive aesthetic pleasure from the recounting if it is well done. Art is not cheerleading, but neither does it need to be just some predictable narrative about how life is terrible and hopeless.