I went to college at 13 (I've graduated now, obviously), and essentially had to answer this question over and over. I went to college, without the getting drunk, without the frat (I did get to do original research, though), and without the getting laid (for the most part). I did it because I loved learning. I still do, but colleges are essentially bureaucratic hucksterism. So a lot people think I missed out -- on high school, college, everything. And I explain, I lead a pretty active life, and I got some awesome chances to do cool things. Now I can spend these years really _focusing_ on doing irresponsible and stupid things.
Why is everyone such a punk about not being able to do cool things if you aren't enrolled in a degree-seeking program?
(Also, I'm American, so all I can do is confirm people have exactly the same social dysfunction you think they do.)