Students, who will probably earn higher than average salaries after graduating, should pay for their own higher education, rather than the state. What are your views?

In many countries today, increasing numbers of young people study at university. Students, who will probably earn higher than average salaries after graduating, should pay for their own higher education, rather than the state. What are your views?
Essay:
Today academic qualifications are essential for getting a reasonable career. Thus more and more students choose to spend four years or even more time at university in nowadays. However, the phenomenon leads to a very significant issue: after graduation, should these students pay for their higher education instead of the state, since they may earn more rewards than the average. And in my opinion, it is a half-and-half thing.
