Recent changes in technology and our industrial base means that we have a large % of the population for whom there is no 'rôle/work' - as we have lost the manufacturing industries that required lots of unqulified or semi-qualified workers, same for the mines, naval yards, docks, etc, etc, etc. I never use self check in supermarkets for that reason.
Not very long ago, you could leave school with very few qualifications, not being a particularly good reader or counter- and there were still jobs out there- jobs with a great camaraderie and community, people could be proud of.
With a larger and larger % of people without jobs they can do- and the few jobs they can do, they won't do (picking those sprouts for a pittance, etc) - then the delusionment, despair and anger will grow.
I truly fear the consequences of this- and in particular for the UK next year when people in the above category, many of whom voted for Brexit- will realise that it won't provide more jobs for them, prices will go up and up, there won't be better housing available and the NHS will not benefit either as promised. They are NOT going to be happy.