Like has been said, it's just common courtesy. I'll hold open doors for anyone just behind me, I don't always get thanks but I do it nontheless. I'm courteous to old women and pregnant women especially it's just what you do. I can be old fashioned and gentlemanly, it's just the way I am. I've stopped guys (2 on 1) harrassing a girl even though she clearly said no. I got into trouble for it, but the girl was grateful and that's what matters. I'd step up again if needed to.
