great question... one ive often wondered actually. generally speaking, i think in unhealthier states , the 8 may be attempting to satisfy the ego and become more dominant and aggressive ; while in healthier states the 8 may be more neutral or even submissive to a point?
i do fantasize about a girl being on top, but in reality i tend to get frustrated, bored, or they just want to grind on my pelvic bone til it bruises.
in real, i prefer to be on top, where i can control the pace of things.... ive had a couple handfuls of women who enjoyed letting them be on top for a few minutes at a time. Out of all that, ive only orgasmed while a girl is on top 3 times in my life. 19yo,27yo, and last month. hah. i do enjoy a few minutes of being bottom like first thing in the morning, if im woken up with it. depending what stroke the girl is doing on top, i can lose sensitivity fairly quickly.... especially teh rocking back n forth... theres almost nothing there.
edit - altho , i dont know if i am perceived as dominant. turns out im extremely bad at self-3rd party -perception... lol