To flip this around: there are very few people in medical or law school that I would trust with a wrench.
People like to look down their nose at people whose jobs they couldn’t do if they tried. They also like to pretend like everybody is stupid for doing them. If nobody did any of those jobs, Mr Smartypants, you’d be dead in a gutter somewhere because you can’t take care of yourself.
My blue collar Dad was always telling me that “Einstein couldn’t tie his own shoes”. I think this sort of attitude is just a way for people to make themselves feel better by bringing other people “down a peg”.
I really do think it is wrong that people look down their noses at other people because of their profession or even worse, that society has made some people ashamed of what they do - good, honest work. That is where this resentment comes from.
At some point in my life I realized that everyone was ignorant about something (maybe most things!). I wouldn’t look down on people who can’t turn a wrench/program a computer/cook a meal/shoot straight/etc. just because I/you can.
People like to look down their nose at people whose jobs they couldn’t do if they tried. They also like to pretend like everybody is stupid for doing them. If nobody did any of those jobs, Mr Smartypants, you’d be dead in a gutter somewhere because you can’t take care of yourself.