Utopias by themselves are typically rather boring, so you either end up with the drama coming from interpersonal friction (think soap opera) or from some extern

Utopias by themselves are typically rather boring, so you either end up with the drama coming from interpersonal friction (think soap opera) or from some external antagonist, making the story about that conflict instead. Contrast that with dystopian fiction, where the things that make it a dystopia are also often what makes the story interesting.