One thought on the topic of the feminist attitude people.
If one is offended by offering to open the door for her, maybe it's a sign that she's not the right one to be dating.
I suspect that I would be constantly butting heads with someone with those beliefs, as I was brought up to respect the fairer sex (though I draw the line at being a carpet to be walked on by those who try to exploit it.)
Living near the Seattle metro area, I see some of it, but I get around it by often opening the door for anyone who is nearly there, male or female. If they get bent out of shape then, it's their wasted energy and time.