Not everyone has Dom or sub inclinations. I think the majority of people are not interested in a relationship characterized by an exchange of power.
I know people of both genders who play with people who aren't their partners just for the sake of it. I'm not into recreational sex, bondage or punishment for its own sake. I do enjoy being in a scene when my husband/Master commands me to. I like it that he derives pleasure from watching me being punished and/or pleasured.
I've written from a variety of points of view. I find female characters much more complex and interesting than males. No offense intended to males! Perhaps knowing more about the female mind and response patterns makes it easier for me to develop female characters.
I just submitted a story written from the male sub POV called "Service With a Smile." It's about a man who's wife/Mistress forces him to provide stud service after devising a way to minimize his pleasure!