From what I read, 40-45% of all women lose their desire completely, and roughly 33% of all men lose their desire. Since most of these from both sexes are married to HD spouses, that can just about account for all the divorces in this country. Now you have to realize that relational issues very likely can cause the sexual issues, it's kind of a chicken or egg thing. You can usually tell the health of the marriage by checking the health of the sex life though.
