Sorry, I misread. But I still think the point stands. Tuition fee is not an issue in many other countries. Besides that, in most areas, a post-university income will likely be higher than working for four years after high school.
Then there's also the social factor. University allows you to network with peers, some of which will be very successful and may give you good leads. It's also a good place to meet a life partner and have a good time.
