Strangely enough, I was just reading an article that seems relevant to this discussion, about pheromones - to quote a small piece of it,

""This is a biological signal to a man that suggests that this woman can reproduce and he responds with romantic behavior related to securing intimate relations with her," says study author Norma McCoy, a psychology professor at San Francisco State University, in a news release. "This is not a smell one can detect, neither the man nor the woman is aware of it, but it is very powerful. The chemical appears to influence a man's desire to have sexual intercourse.""


If the men you were talking about see the problem being one of desire rather than of ability, I wonder if it's possible that their partners are not producing as much of those "come hither" pheromones as they used to, for whatever reason - age, stress, whatever. It
would take about a hundred bucks to find out - that's what they want for synthetic pheromones which women can add to their perfume at the Athena Institute website - they apparently have synthetic pheromones for men which can be added to aftershave, if the lack of desire rests with the female partner.

Interesting, huh? Possibly it's total and utter hooey, but what if it was a very cheap and painless way to avoid hours and hours of couples counseling leading to a shitty divorce?