I was raised to say "Please", "Thank you", "yes, m'am/sir", etc. I am very grateful that my DH is strict with his sons about "manners", they grumble now but I think they will appreciate it one day.
Slightly OT but one thing that sorta bothers me is strangers just casually using my first name without my permission---KWIM? I am a nurse and I always refer to my patients as "Mr Jones" or "Mrs Smith", and to the docs as "Dr Feelgood"--even though they are invariable quite a bit younger than me, LOL--until they ask me to do otherwise. I just think it's more respectful (no, I do not request that they call me "Nurse Fuzzywuzzy", I introduce myself as "Jane"). But when I am shopping and I pay with my card, for example, I find it a bit too familiar when the sales clerk calls me by my first name instead of Mrs XXX. I am probably old-fashioned in this respect?