I'm not for overall equal wages for men and women. You can't compare men's wages with those of women and draw a conclusion cause it's definitely not a matter of figures but the jobs themselves (or as you put, the career choices that men and women make). I don't know about the US, but in Iran, women earn less for doing EXACTLY the same tasks as their male counterparts. I'm talking about a homogeneous group. Take an IT office for example, a man and woman are hired to do same thing and their salaries differ. The justification? Women ask for less, are satisfied with less, or as this retard puts, are less ambitious. That sickens me: ask for more, they will give you more. Be more ambitious, you will earn what you deserve. This is bullshit.
Having a high tech profession myself, especially one where I've managed multi-million-dollar budgets primarily driven by staff salaries, I have generally
not seen a disparity between men and women in the same role. Where there is reason for gripe, however, is that you could make more arguments that there weren't enough women in advanced positions ... i.e., not the "same pay for same work" argument but the "not getting the same opportunities" argument.
But there are counterintuitive examples too. I know for a fact that for graduates out of a chemical engineering Bachelor's degree program, for example, women tend to earn
more than men as new graduates. That's data cherry-picking, of course, but it refutes the idea that the forces are purely systemic across the board.
I'm sure there are legacy abuses in not-equal-pay for equal work out there, and the question is how badly widely spread this is. But what gets lost in this discussion is that there are clear counter-examples and clear forces that have nothing to do with those factors -- such as choices of professions -- that bias the figures that often get the most cited. This stuff becomes legendary fuel for indignation, and often it can be misplaced -- which, honestly, does any cause a disservice when you can call some of the data into factual question.