@MrsTerryPratchett
It does depend on extent of the mismatch really. Of course I understand that things change with age, children, jobs, health... But sometimes changes happen way before any of these become an issue.
I've heard from both men and women, who say within a year of marriage, the sex had plummeted.
I've just commented on another thread, where the OP is ill.
The sexual desires from her husband are ridiculous and divorce would be my next step in that situation.
It's really differentiating normal, from crazy.
I see situations where the couple haven't had sex in years, then the wife is surprised when he leaves for an OW or when an affair is discovered.
One woman actually said, well yes....it's been a good few years, but "I was waiting till the kids left home to get back on track"
Pure and utter nonsense. I was in disbelief hearing it.
One thing I've learnt, is that you can't know how the lack of intimacy affects another individual, because your aren't them. You can't compare them with other men or women, because we're all different.
I must stress, that I'm talking about relationships that are not affected by illness or other relevant factors. In these cases communication is very important between the couple.
If your husband is threatening an affair while you're going through the menopause... For example... Then I'd question why one would want to be with such an inconsiderate man a moment longer.
It's about seeking solutions jointly. Not suggesting an open relationship.