in answer to your question,although I am male and not the most sexually experienced of people, I ,personally have found that the women I've made love to like being on top simply because they can control the depth of penetration and the angle of penetration,meaning that at any point they feel uncomfortable they can alter position to suit,whereas in other positions this option is not so viable,,in closing unless you have a gargantuan,or weird shaped/barbed knob this should be the most comfortable position for yourself and your partner,,,
sorry everyone couldn't think of anything witty