Marriage was created by God (as the foundation of the family) and therefore men do not have the authority to change marriage. Any society that tries to "improve" on God's plan for humanity will bring not "equality" and sexual utopia, but instead abject moral depravity, societal collapse and chaos (Rome, 476 AD). We are well on our way. Will the younger generation figure it out in time? Only God knows. He knows how to get results, and moves history in great arcs, always preserving a remnant of true believers from which He will fashion a new whole cloth of the Holy Church, the City of God, the Body of True Believers.