Because I don't think there is, and surely if there isn't a job for everyone, then we need to ensure that everyone can eat, and live a decent life, even if they CAN'T get a job. I'm sure if you looked at the amount of jobs in Britain, and compared it to the total population of Britain, there would be a disparity between the two figures.
And I personally KNOW that there isn't enough unskilled jobs around now, for the people that CAN'T get any further qualifications.