Some women need to be physically overpowered by their man. They need to know without any doubt that resistance is futile. And they can only discover that by resisting, and experiencing the futility of that resistance. They need to be able to be their strongest, most powerful self, and yet still be overpowered by their man. They need to know that the man has the ability to control them actively, and that a bit of resistance won't make him crumble, sulk, or stomp off in a tizzy. They need to know that his control is not all talk. This can be very annoying or frustrating for some men. If a woman claims to be submissive (though note that many american women do not claim to be submissive!) why doesn't she just do what he says and submit? Does she want him to dominate her or doesn't she? Why should he control her if she does not submit? Isn't it disrespectful of her to resist?