You don’t apparently know many women. You assume, without any justification other than your own opinion, that women are making independent decisions on a level playing field. They are NOT!!!
Do your research about the “choices” women encounter in developed economies, including this one, and you will realize how shallow your assessment is. My wife, an accomplished COO regularly recruited for President/CEO positions, knows many female executives around the country, and they have a much more realistic viewpoint than you do.
And to be very clear, many women are smarter than most men. Not just intelligence but emotional intelligence. They are more collaborative, more innovative, more aware. Companies with female senior executives and board members are more profitable…the data are irrefutable on this.
When it comes to being edified, start here: http://www.economist.com/node/21539928