However, this makes the mistaken assumption that college's only role is to prepare you for a career. I majored in Philosophy at a Jesuit college in Chicago. Currently, I'm a software developer. College was about getting introduced to new ideas and read books I would have never sought out on my own. Really... who reads Augustine or Kierkegaard anymore? I learned how to live on my own in college; how I wanted to spend my time and my money, how to survive in my first apartment and make rent money. I also met a great bunch of friends I still keep in contact with.
Bottom line: college should never be treated like a trade school. It's not designed for job training. If you consider it so, it never makes economic sense. College, and liberal arts degrees in particular, teach you how to think.