I'm sorry but this menopause card get's play too much, and no I am not there yet. I know women in their 60's & 70's that are hot an horny. When I was younger, my needs were stability & maturity thus I was attracted to older men. Now I'm older I prefer younger men for sex and mature gentlemen for conversation.
A good marriage is a lot of work, for both men & women. But after so many years, you just get board....even the women. To think that one person can satisfy all your needs: emotionally, sexually, intellectually, spiritually, financially ect..for a lifetime? That's a lot of pressure and very unrealistic.
Many men say they would like for their SO's to give the green light for outside activities, but if she
( the wife) begins having a good time, they get upset. Several times I've seen men talk their wives into experimenting with the swing scene only to their surprise she turned into sex machine...just not with him.
A women's sexuality is more complex than her male counterpart. Orgasms feel good no matter what the gender or age. I think there needs to be more education in sexuality and less shame, in doing so many relationships would see an improvement.