Why oh why?

Is it normal to want to obsess about another subject? I hate having obsessive thoughts about television, infidelity, paternity tests, and divorce, and someone getting caught in adultery and fornication. This is true especially in movies and television. I wish I wasn't so obsessed with entertainment choices and unfaithfulness. Why couldn't I be obsessed over something even more mundane, like dolls or numbers? Or is this type of thinking abnormal because I wonder if every form of obsessive compulsive disorder is sometimes hard to deal with?