Sex Dreams, or my lack thereof

I read this article with great curiosity. I’ve had many odd, wonderful and weird dreams in my time, but the reason Dr. Spurr’s piece got me so excited is because I very rarely have sex dreams. Like, one every few years, if I’m lucky.
I’ve always thought this odd, considering how much I think about sex during my waking hours. Sometimes in pervy ways, of course, but also in my research, writing and broadcasting.
Maybe it is because I am so uninhibited in my waking life that my unconscious mind doesn’t need to keep any secrets to come out in my dreaming life?
I’ll always wonder about this…