I dont. If someone has more experience and more years at a company i do not have a problem with them earning more than someone doing the exact same thing on day 1. If the company decides to do that.
But women tend to take periods of time off and they are not working doing compony work, that time is lost,and men who keep working their entire careers will and ought to be in line for promotions and advancement faster because their career is how their family is provided for.
If a person, a man or a woman, has more years at a company doing their job effectively, chances are they produce more or better product than any newbie.
Also time taken off from work is always a factor in evaluating an employee.
Which was my point, that it is very difficult for outsiders to judge who is doing work on par with whom. Unless the job is fairly straight forward such as working on an assembly line, it is best to leave it to the employer to decide wage levels for individuals.