For the most part having sex for most men is in and of itself a pleasurable activity that is rarely boring. However, the same can't be said for women as many find having sex to be a chore or something that they have to do out of duty or obligation to their significant other. It also means that a lot of men in relationships end up missing out on a lot of great sex simply because the women that they are with would rather do something else besides sleep with them since they get little or no pleasure from it.