Politeness is so important to me, as is respect. I feel these are two things that should come naturally to everyone, but unfortunately it seems that pleasantries and platitudes have largely taken the backseat nowadays.
I am physically incapable of being rude to waiters, waitresses, bartenders, cashiers, etc. And to most people in general! Working as a waitress/bartender myself, I know how much a simple “please” and “thank you” and even the hint of a smile and a pleasant tone of voice can make my workdays easier.