I can understand NOT BEING IN THE MOOD, but maybe if one allowed themselves to be seduced with gentle caresses, instead of biting the poor man's head off something great would happen for BOTH partners.
Sometimes, I think women are very selfish when it comes to issues of intimacy, wanting it to be ALL ABOUT THEM, and if they are not in the mood, well too bad. That in my mind is not a partnership, not about finding a middle ground.
Today is what counts, so make the most of what you have, rather than regret what might have been.