Should Women Make Equal Incomes?

I used to think so.  After a little consideration, however, I notice that men have god knows how many social obligations to do everything for women.  If taken out to eat, it is customary for the MAN to pick up the tab.  When dating, the MAN is supposed to buy her expensive shit, like jewelry, to name one. 

As long as society pressurizes and expects men to wait on them hand and foot, I think the fact that men tend to make higher incomes is justified. 

>>101
 I'm afraid I don't have the time to find sources or elaborate to a sufficient degree. I'm not going to claim upper hand, but neither can you until you get some facts. My point, unsubstantiated as it is, is that the minuscule biological discrepancies are overprojected on society, causing waste of resources and inflexibility in people's minds. Rape and homophobia are partially caused by gender roles, if you ask me, but I don't have the oomph in me today to solidify my position with facts or elaboration. Feminism is justified even in our time, and I don't think I am alone in stating that.