Service today (per the OP's topic) is much like and reflective of the current fashion in parenting, in that you can't teach someone something you don't know, the corollary being you can't learn something from someone who doesn't know or care. We have devolved into a crass, profane, self absorbed society that foams at the mouth over real or imaginary "rights" but is basically unfamiliar with or dismissive of the concept of "responsibilities".
Civility, manners, hygiene, basic skills in communication and courtesy, the work ethic and the idea that good service is a responsibility and a reasonable expectation have all slipped several notches on the scale in my lifetime. Our "right" to dress, speak, act the way we want as an "in-duh-vidual" even at our place of employment supersedes the "old fashioned" ways.
Given, generalities can be dangerous and there are always exceptions. But the coarseness of life today is in direct opposite proportion to our prosperity. The more people have the more they seem to feel entitled to, and the more their disdainful treatment of those "beneath them" seems to come to the fore. And on the other end, many who have by choice or necessity tied themselves to service oriented jobs are openly hostile to the concept and those they are there to serve, as they seem to feel it's beneath them and they resent being there. But most like that can't seem to grasp "working your way up and out" of a job like that, feeling instead they deserve to have a better job with no real ability or skill other than "I want it". The passive aggressive poor attitude of 'just don't give a ****' is more and more prevalent. It's becoming the norm instead of the exception.
Solutions? Forget it. Should be obvious that given our fascination with "rights" and "self" today it is extremely unlikely that genie is ever going back into the bottle. The "greatest generation" gave this country untold opportunity and prosperity after defeating the WWII foes. Unfortunately, the lesson that all that can be lost more quickly than it arrived and our national survival is not a sure thing even today is something most cannot grasp these days.
When the small lessons are lost, the big reminders are always painful.
Don't care for some (or all) of what I wrote ? I was asked for my
opinion, so whether it's popular or not it can't be 'wrong' 'cause it's
an opinion.

Yours may vary . . . good for you.