Let's say almost 50% of people are now leaving school and going on to further education. In many cases (e.g., nursing), these days it's an obligation, not simply a whim. So, 3 years at university in order to treat bedsores and empty bedpans. Most of the people that I know who are graduates are not in especially highly paid jobs, and those who are will be paying higher taxes in any case, so they're already paying back any advantage.
The whole expansion of the university sector was actually so that the government wouldn't need to pay masses of unemployed youngsters, then they went further and further to the point where people have been conned into thinking that getting tens of thousands of quid in debt before you even start out in adult life will somehow solve not only their problems but some of the government's too.
The argument is exactly the same for health care. Why shouldn't we pay if we want to get or stay healthy to improve our chances of getting or staying in a job?
I suspect that a lot of people look on students and higher education as a soft target, but not health care, and yet there are millions of chancers costing the NHS billions every year through malingering of one sort or another.