This happens quite often with people in the lifestyle. The largest population of subs are male subs, men who are in positions of power, authority and control IRL, yet feel the need to submit sexually. I myself have often had to be the boss at work, to be assertive and dominant, yet I am also a submissive to my Master. In fact, my first Dom was a switch who needed me to be His Domme at times and I simply could not do it. I'm not hardwired that way. I am submissive and revel in that, because it is what I want and need and I accept it.