I think it's interesting to note that fantasies of dominance and submission are often inversely related to how much power a person really has. That is, an individual with considerable wealth and power is more likely to engage in submissive fantasies then some how is povety stricken. Anyone else remember Mrs. Whiplash and her pet MP?
Why? Because being submissive is a game - so long as you can put it down when you get tierd of it. Then the powerful person can go back to controlling a budget of millions, hire, firing and controling the world around them like it was made out of pastercine. When they feel like a break from such complete command they can find their domitor and go "Oooh, yes Mistrss" for few hours.
However, if you have no power, then submission becomes threatening because there is no guarantee you will be able to step out of it again. Powerlessness is an everyday reality as your boss beats on you to work faster and the bank manager is breathing down your neck. When you can't control anything else, slap your wife till she does as you say. Go on, you'll feel like a man again.