Old-Fashioned Rules for Good Behavior
I taught my child only husbands & wives kiss on the mouth. Fathers & mothers (or any adult ) shouldn't be kissing their daughters & sons ( or any children ) on the mouth.
In the Victorian era, if you were serving liqueur to a guest, you would serve it from an elegant decanter which had a stopper. You as the hostess would remove the stopper, pour your guest their drink then hand it to them. The key here is what you did with the stopper. If you replace the stopper back on the decanter, your actions are telling the guest that here is a drink, enjoy, but there will be no more. If you hand your guest their drink and place the stopper on the table next to the decanter, you are telling the guest, here is your first drink and you are welcome to have more if you wish.
At a high school in Cobourg, Ontario they had an etiquette list in a display for teachers from the 1880's (opened in the mid 1800's). Two or three I remember was that a teacher should never get a shave at the barber's (because it was expensive and you are showing off, by being seen there), they had to read good books, they could only court on Sundays with a chaperone, they had to bring their share of firewood to heat the school, among the many others.
There was a time when there was a sense of ethics, proper conduct and community togetherness. Now everyone thinks they succeed only by themselves and that is no repercussion for being vulgar.
I feel its such a shame that people these days have no manners. I never get a please and thank you. I hate when they say "no problem". I feel like society is declining fast.
Saying "No problem" means different things to different people though. In my generation, asking someone for help almost feels like you're being bothersome to that person, and so when someone says "thank you" to us, we want them to know that it was our pleasure to help them - the person asking for help wasn't a bother. It's not being rude, it's just a generational difference. To millennials, it means the same as "you're welcome." Nothing to get upset about.