This question is lifted from author Sahar Sabati's informative Ask an Author series, which ran from 2015-2016 and included responses and reflections from English-speaking authors from around the globe. Since I'm often asked these questions by readers, I have republished my answers here with Sahar's kind permission.
To quote the 1968 film 2001:A Space Odyssey, of course I dream. ‘All intelligent beings dream. Nobody knows why.’ My dreams, when I have them, are not very restful, tending to collapse into nightmares, which might have something to do with the horror writer in me! Recently, I dreamed that I was looking for my car in a gigantesque parking lot like the ones you see at Disney World. Only my car was white, along with every other car in the lot. I spent the entire ‘night’ wandering from park to park searching for my car. Here’s what an online dream analysis site made of it: “To dream that you are in parking lot suggests that you need to slow down and take time from your daily activities.” Now, why am I not surprised…?