Deep Question.

I read an interesting article not long ago on that issue of chivalry, manners, and feminism. Can't seem to find it at the moment, but the author's thesis was that yes, man-holds-door-for-woman is pretty much a thing of the past, but women can now get whatever job they want. They're no longer restricted to teacher, nurse, or secretary as they were back in the days when men were expected to hold doors for women. We may have less chivalry, but we have more equality, which is overall better.

(Psst: the courteous thing is to hold the door for whoever happens to be behind you or struggling with belongings, regardless of the sex of the door-holder and the door-holdee.)