Let's not overstate it. The basic incongruence that many of these women are finding out later in life is that if they spend a decade not valuing their own sexuality, by what legitimate claim can they expect anybody else to value it?
Something given away cavalierly tends to have a lower perceived value.
Ultimately, women (and men) who go down this road have no legitimate expectation for anyone else to value their sexuality.
The sheer thought of being alone and unappreciated make many women feel so vulnerable as to go down the easy road.
I feel sorry for women who crave for the company of a man to the extent that they compromise their values and give in to practically any whim.
I also agree that women have the power to hold men to higher standards and to tell a man "no, I'm not a floozy," LOL. Oh heck, who cares if he leaves, because it means he doesn't appreciate the woman for who she is, but only for what she is willing to give for free, and I don't mean in monetary terms.
I say, better alone than in bad company.