Other than Domestic Violence and other idiosyncrasies of men, It seems that most divorces and separations are due to the choices of women..
It is a well known fact that women have more power in society today and in relationships. It's true, women deserve equal rights, respect, equal pay, to be listened too etc. etc. however, I believe that when women started receiving many of these things, an abuse of power also began. If history is any indication, I believe that when the shift in power started to become more evident, like men before them who abused them and misused their power, they began to take advantage of their power and instead of putting limits on reality, they began to believe that men were no longer necessary in their lives.
For instance they now can make equal pay, and their rights have grown so much but if you look around, the only thing that seems to be a challenge, is having a good relationship or finding someone to compliment their lives.
Whoever you are, don't believe the hype! To much power can and have only led to destruction and in todays society it's pretty much acceptable for women to get a divorce and live alone with their children or themselves.