I used to think so long as my DS was happy doing whatever job he chose to do, then that was enough, but as time has gone on, I am seeing a bigger picture.
It is all about balance imo.
My DS may very well be happy to have a job which requires less qualifications, lets say for example a shelf stacker at a supermarket, but would he be happy with the kind of lifestyle that this job will probably give him. He wont be spending every waking moment at work, so when he is not at work, is he happy to be unable to afford to live in comfortable surroundings, have a reasonable social life, or drive a car, ,maybe travel abroad on his holidays or have perhaps 3 or 4 DC, instead of 1/2. 63+
Whether we like it or not, money talks, and most jobs which are well paid require either qualifications, or risk.
I suppose it all depends on what standard of living we want.
There are very few people in comparison, who have no qualifications at all, but go on to have a successful career doing what they love to do, and being paid handsomely for it.
I am by no means saying people should work in jobs they hate, but there is a balance.
Lets be honest, how many people do you know who have no qualifications who are in fantastic jobs and are genuinely happy with their standard of living. Even a hairdresser has to be trained and requires experience and qualifications. (Since you mention hairdressers.)
It is difficult enough to find a job at all atm with qualifications. Multiple that 10 fold if you haven't got any.
Just my opinion though.