I hesitate to follow that last post...
I have met a number of mature, single ladies in this lifestyle. I think, IMHO, that most ladies who live like this are very independent, strong, and not willing to give up their hard-earned freedom for a relationship. Many are celebrating their release from being responsible for a partner or family, having spent most of their adult lives taking care of others in their roles as wife, mother, daughter.
Hormones also play a key role in this. As women age, estrogen levels decrease and testosterone levels exert a greater influence, causing women to become more aggressive, more confident, more like men. As men age, their testosterone levels decrease, causing less aggressiveness, more passivity. Just when women become less needful of a partner to help rear children, etc., their energy levels increase and they are ready to hit the ground running, doing and experiencing the things they have postponed most of their lives. And men are ready to slow down the pace. It's a conundrum, for sure.
Our current culture now accepts and even encourages women to be independent. We are better educated, able to support ourselves (and our children), more powerful than we've ever been. Unfortunately, the poor guys haven't been taught how to interact with these new women. The rules were changed when the men weren't looking. And just when we don't need you anymore, you need us! This isn't meant as a "bad thing", it just is what it is.
There are good people of both genders out there. The problem may be that, like me, now that my partner is gone, my children grown and out on their own, women are chomping at the bit to see what's over the next hill. It's time to do it our way, not follow along behind someone else who is seeking their dreams.
I cannot speak for all women; each of us (male and female) has their own path to walk. But I'm trying to understand why it is so difficult to establish a partnership in these, our later years. So far, this is what I've come up with.