First of all who is creating divisions between men and women? Every gender was represented at the various marches. The Issues weren't only about women but all of American society. Secondly, under Trump there is no possibility that equality in income and social issues will be addressed or remedied.
As I have posted before, this march was an opportunity to let Trump and his minions know that they are being watched and that hard fought rights will not be go unnoticed if they and when they are changed.