I, like Ipet have always felt that men should be Dom and women should be submissive. Nature has dictated that. Let's face it... Men are stronger than women and can, at will penetrate them (though of course legal/ethical issues arise from that). I just don't feel that nature made every physical female a mental female. I also think that sex and bdsm is more mental.
Other than that. Most cultures view masculinity as dominance as hardness.
They are. Some cultures actually have what is called "the third gender". That's actually my preferred gender. It's female boys and girls who feel differently than their nature assigned physical gender. I'm not attracted by sexual organs specifically. (though a great set of tits is a great set of tits).
I am attracted to physical boys who act like girls. Not like male subs... but like girls. I actually reward acting like a female more than i prefer forced feminization.
I'm physically a female and enjoy physical aspects of that however I am mentally a boy.