Do you whack off while facing the bed, lying down on it and rubbing until you cum?
Wonder why you have less actual sex?
You could have TMS, and I kid you not. Seems that if you like to jerk off, by rubbing yourself on a bed or such in a prone position, you can harm that wee pecker which in turn can lead to not having much of a sex drive.
Hey they did a study on it, and this place seems to have all the facts too.
Plus, there happens to be a masturbation survey as well, not that could be an interesting way to spend a few minutes online, once you realize jerking off isn't about just humping the mattress.