It's called manners and, sadly they have gone out of vogue for many.

It never fails to surprise me how many people compliment us on our children's manners because they will hold the door for someone or say please and thank you.

Moving parts in rubbing contact require lubrication to avoid excessive wear. Honorifics and formal politeness provide lubrication where people rub together. Often the very young, the untraveled, the naive, the unsophisticated deplore these formalities as "empty", "meaningless", or "dishonest", and scorn those who use them. No matter how "pure" their motives, they thereby throw sand into machinery that does not work too well at best.