Ninety percent of this game is half mental.
A man will teach his wife what is needed to arouse his desires. And there is no reason for a woman to know any more than what her husband is prepared to teach her. If she gets married knowing far too much about what she wants and doesn't want then she will be ready to find fault with her husband.
Maybe the truth was, it shouldn't be so easy to be amazing. Then everything would be. It's the things you fight for and struggle with before earning that have the greatest worth. When something's difficult to come by, you'll do that much more to make sure it's even harder--if not impossible--to lose.