This topic honestly has never crossed my mind. I'm in Georgia & I would like to think hsopitality is still alive. Guys open doors for gals, etc. Heck my 9 y/o son even opens my car door for me. I was raised to show any elder respect by calling them sir or maam. When I entered the military and called a non-commisioned officer sir or maam, I got "dropped" & had to do push-ups. That was a hard habit for me to break. I guess my point is that it's a habit. Don't get hung up on it. I don't see it as derogatory in anyway.