A woman can be very beautiful and an ideal model and she will photograph incredibly well but she'll appear in film and it won't work. What works is some fusion of physical beauty with some mental field or whatever you call it. I don't know.
You think intercourse is a private act it's not it's a social act. Men are sexually predatory in life and women are sexually manipulative. When two individuals come together and leave their gender outside the bedroom door then they make love.