[Image: Forked Tongue at Window Rock, one of a series of “Arizona Postcards” by Scottish artist James “Jimmy” Cosgrove. To view the entire collection, see this page.]
A science-fiction story I read long ago tells of a visitor from another planet who simply cannot understand why human beings lie. I don’t remember much about the story — no author, title, catchphrase, so I can’t even Google it easily — but I seem to remember that it went one level further: Once it had received (and reluctantly accepted) the explanations (to gain an advantage over someone else, to inflate one’s self-image, etc.), the alien asked, So then why do you write fiction, which serves none of those purposes?
I have no idea how I’d answer an alien with a question like that (or with any others, for that matter). In general, though, one simple answer is: We write fiction in the expectation that someone will read it. Even if only the story’s author will ever read it, without at least one reader I myself can’t see the point, either.
But still that ducks the question, which is really: Why do people read fiction?