you are being being funny in your reasoning and haven't produced any economic explanation for why women make less, except for
lesser:
Of course this is not any discrimination, mostly value of works dominated by men is higher than value of works dominated by women
Let concentrate on workers without higher education. They consist the vast majority and they are the major factor which create Lukasz's table. What is the most typical job hold by a man? Something in building industry. Women cannot compete here duo to physical weakness. Here always some specific skills are needed thus people with experience are valued. Physical power and specific skills increase their wages.
What is the most popular among women? Saleswoman in different kind of shops. This job is not so physical, neither special skills are needed. Thus they most likely being offered a minimum wage.
A lazy man who decide to work as a unqualified safeguard in supermarket earn minimum wage for the same reason. This is not about sex.
Acctualy Lesser your view on female role in society is outdated.
I'm talking about some economic facts and not about women role in the society.
I also don't claim that in some areas monetary value of women work cannot be higher than average for men. In the job market they are only workers, their sex is not important in vast majority of cases. (exceptions? for example somebody searching for woman or male models) Unless interference of socialist regulations, this may change much for worse.