I had a ton of fun in college -- didn't pay much, too, with scholarships, living at home, and Iowa State being dirt cheap. So I feel less bad about 5.5 years in nerd Las Vegas given I paid so little.
I learned a ton, too, but none of it whatsoever relevant to my career. I was never into the beer/party/sex attractions, but rather I was that strange nerd that actually enjoyed the intellectual content of the courses. Not trying to assert my superiority over anybody who liked that stuff -- just my own relative weirdness for enjoying taking a class on Shakespeare and staying up late in the library reading the materials for graduate seminars, rather than being out partying.
However you all enjoyed it, I am glad you did.
The thing is, my degree (and specifically my graduate one) got me noticed in applying for a decent job. Five years of that, and I parlayed it into an excellent job. None of my day-to-day work has much to do with what I learned in class or on campus, but it "put up the flag" to employers I was bright, conscientious, and relatively compliant and respectful of authority, which was all it took to start me on the ladder and get me going to where I am now. That education had a great deal to do with winning the approval of my then girlfriend and now wife's family, which was an added bonus given I quite fancy Dr. Sigma.
College is a lot more those two factors (of labor market signals, a fun consumption item when you're late in your teens and early in your 20s trying to avoid adult responsibilities, and a place to find a spouse or at least signify that you are in the educated category of worthy potential spouses later on) than we like to admit.
But it worked out fine for me.