IonaNE
In supermarkets I tend to scan things myself (unless it's a really big weekend shop) because of the "Are you planning anything nice today/this evening?" and "Oh, that cake/ice-cream/mango looks really delicious!" and similar coming from the person at the till. I usually answer politely, but what I'd really like to say is "sorry, none of your business, I do have friends, I discuss these things with them, I'm here to shop and get out, could we omit the chatting please."
Also... well, sorry to say but the people who did well in school work as lawyers, doctors and university lecturers, and not in retail, hairdressing or "beauty therapy". And while it was none of the business of that customer and s/he should not have voiced it, a degree that leads to working in retail was a waste of time and money.
I am shocked (well tbh not really just disgusted) at your attitude towards people who work in retail or service industries.
How do you suppose you would do your shopping if there was nobody there to serve you? They arent beneath you just because they do a different job to you. Many very well educated people work in these industries, many go on to work their way up the ladder and many well educated people in other 'better' (according to you) jobs are bigger pratts than anyone working at my local supermarket I can tell you. Education doesnt mean common sense or manners (obviously judging by your post) You discuss mangos with your friends? Wow they must be scintilating conversationalists! People are just being nice to you to pass the time in a pleasant way yet you would rather throw it back in their faces? Says a lot more about you than the person in the supermarket I'm afraid.
Do you understand the current job market? Many people have to take what they can get if they get let down in their job or are unable to find a job in their particular field at that precise time they are serving you in a shop/hairdressers/beauticians. Maybe due to helath or family circumstances they are unable to work the hours needed for their chosen career meantime? Maybe it suits them to do it, and despite customers like you they actually enjoy it which means more to many people than all the 'well done at school jobs' in the world.
And you do know that many people in the jobs you mention have qualifications in their field anyway you just dont have a clue about them unless you ask.
Wow just wow, never heard such a rotten attitude to people who are doing YOU a service...
P.S. why is the emphasis not working?