Because there still exists a significant pay gap, women tend to earn less than men over the course of their lifetimes. Compounding the problem, women tend to spend less time in the workforce than men.
Every once in a while I get the highly inappropriate proposal which is like, 'Wow, Really! You don't even know me and I don't know you at all, and you want that to happen? Tonight? Ok, I get off work at 7.30.'

