Write what you want to read. So many people think they need to write a particular kind of book, or imitate a successful style, in order to be published. I've known people who felt they had to model their book on existing blockbusters, or write in a genre that's supposed to be "hot right now" in order to get agents and publishers interested. But if you're writing in a genre you don't like, or modeling yourself on a book you don't respect, it'll show through. You're your first, most important reader, so write the book that reader really wants to read.