Have manners changed?

This was inspired by an earlier question, of which I can’t remember how to link.

Are manners in general important to you? Can you think of any manners that are expected of you in your area/country that seem random that we might find interesting?

Do you miss just regular manners, like ‘good morning’ or being acknowledged in the street (for example).

Do you think that ‘manners maketh the man’ or should I say, person!