Sometimes ideas just pop up and I start a project without giving much thought to its genre. I don’t read just one genre, so I never thought I would only have to write one genre.
But there’s marketing. And library shelving.
So here’s a discussion of “the genre debate.”
A Better Way to Think About the Genre Debate – The New Yorker
http://www.newyorker.com/books/joshua-rothman/better-way-think-genre-debate