Welcome to the wacky world of Duke, Simone.
Basically, private sector workers are dedicated and hardworking, the drivers of the dynamic UK economy. Public sector employees, on the other hand, are idle, feckless, sponging shirkers who have never done a decent day's work in their lives.
So as you say, Simone, teachers, doctors, nurses, dentists, rat - catchers, social workers, police officers are all a waste of space, whilst bookies, hairdressers, tattooists, accountants, estate agents, hedge-fund managers and supermarket shelf-stackers are doing the useful things that keep UK plc ticking over. You couldn't make it up, really