I really think it's a big symtom of women's changing roles in modern times. We are all acclimating to women's roles and equality and blah blah blah.
I've also read that something like 70-80 percent (depending on which study you read) of long term relationship breakups/divorces are intiated by the woman. It all comes back to how society views these things and how it's changed over the last decades.
Interesting that general thinking says men are dogs and sleep with everything... yet when I ask women friends how many dude's they've slept with it's on average TRIPLE the number of the men. I mean I know a couple guys who are just off the charts of course, but on average it was scarey as shit and I wish I hadnt asked the question now
These aren't like total whores either. A couple women I asked that are like the nice girl next door types COULDN'T COUNT!
It'll all get better I think as the middle ground is found and everyone adapts to the "new world".