A bit hard given that men by definition can't be mothers and wives...They can still be parents and spouses, even if a different (gender-specific) term is used. However, men rarely do the full-time father thing and, from what I have seen around me, even when they are unemployed and financially dependent on their wife, they don't typically take over the housework and cooking to the point of doing it 40 to 60 hours per week like women. (The last statistics I saw: full-time homemakers do 60 hours of housework a week, women with full-time paid jobs still do 40 hours of housework per week. Men have tried to take up the slack and are doing 10% more than they used to, which amounts to 10 minutes a day or 1 hour and 10 minutes per week.)
I'm a woman in my 40's. I've read that hormonal changes make men and women more like the other gender past a certain age. My sons are grown, I have no specific plans to have more kids, and my career goals are being given a much higher priority than trying to "find a man" post-divorce. So I can't say I would particularly disagree with your thought (in your last paragraph).