Absolutely ! Being a southerner,born and bred, "we", me especially, were taught manners from early early on. Even with my children and then my grandchildren, please, thank you, etc. is part of life ! I used to sell real estate and had a client, and one day she asked me a question and I answered "yes, mam'", oh did that make her mad ! She said that was demeaning to her ! Even though she was much younger than me and I certainly didn't mean anything about it, other than answering her question !
Just today I responded "thank you" to a person that held the door for me and I'm certain that person didn't speak English, however, they were kind enough to hold the door for me and smiled when I said thank you.
Thank you for the opportunity for letting me vent!