I also enjoy writing nonfiction, though, then one is limited to the facts, or at least your version of the facts. Really, there is no such thing as nonfiction. Everything written is someone's rendition of something that really happened. Even biographies tell only the writer's side, and if that writer did interviews to give a more balanced approach, it helps, but it still is limited in perspective.
Maybe fiction is more honest and true than nonfiction, for at least the author does not claim it to be real and factual. It's been shown that even studies and statistics are skewed, depending on the survey questions, the demographics of those surveyed, and the prejudices (either outward or subliminal) of the researcher.
That being said, I do like reading and writing "nonfiction," but I always keep in mind that it is one author's perspective. Both fiction and nonfiction have a basis of facts, or else we wouldn't be able to relate to it at all. Even Star Wars has characters we can relate to. We all know a Han Solo or a Luke Sky Walker. Right, Mr. Ludlum?
What do you think? Fiction or non?