One of the biggest benefits I've experienced while attending university is that I'm forced to learn concepts I might not otherwise expose myself to. Over my last semester I had an assembly language course which exposed me to many unique problems I wouldn't have otherwise encountered.

If I'd been learning on my own, I doubt I would have seen the value in investing a hundred hours in a language I wouldn't ever use in industry. Same goes for a number of other courses, all with varying degrees of relevance.