I went to uni to learn to learn. It helped that it was free, but it was a rigorous education with formal proofs (starting in week 1), proper research, scientific writing etc. Very few people will learn that outside universities, and, while not strictly needed for most jobs, it really helps as a tool to shut 'talkers' up to this day. Socially it was good as well; got my first and second project for my tiny company I set up in uni from the father's of two study mates: the first project was 100k, the second 1.6m (both guilders at time), so there is that; I would have never known these people otherwise.