Most men, particularly of my age, are guilty of being selfish and self-centered when it comes to sex, I agree. You say, "A woman can use a man's care and skill during sex as a filter to see if he really likes her...," I believe that's true of both men and women. And I really hope you are correct when you say, "A man's behavior and love and care are the aphrodisiac," because if that is true, it means physical attractiveness alone matters less than I thought.