@Luthien Obligatory, a lock that can be opened by any key is useless. A key that can open any lock is not. That's not exactly a double standard since only one gender can become pregnant. Might as well call it a double standard that men men can grow out mustaches without being shamed.
But hey, I'm not saying don't grow out your mustache or sleep with countless men. We're all free willed humans. Do whatever makes you happy.