There's almost nothing I learned during my 4 year college education that prepared me for any of my (tech) jobs post-graduation. And, due to poor decisions that I made, essentially as a child, I dropped out of high school when I was 16. So, a GED and a college education seemed like the only way out of the hole I dug myself at the time.
I guess now that I am 30 and know myself a lot better, what I do regret is not being more creative. I probably could've figured out a way into a job similar to the one I have now if I had been more creative and avoided getting a 4 year degree.
Did you participate? I've always been an avid and successful self-teacher, but college gave me opportunities and goals that I would have as an individual "smart" person. Everyone I've met who "tried" in an educational setting has come out knowing more than when they went in.