It's also unfair to think that men make choices that lend to earning more than women do.I care more about fairness than I do equality.
For example, it may be unequal that men as a group earn more than women, but it is not unfair given that men (as a group) tend to make choices that lend to earning more than women do. This is simply the market at play. Government is perfectly legitimate in making sure that the market is as fair as possible, but it has no right to systematically privilege some groups over others out of a misguided pursuit of 'equality'.