"College forces you to interact with people and ideas that you either disagree with and/or were completely unaware of. It's the single best way to reduce the number of "unknown unknowns."

So does getting a job, volunteering, traveling the world, doing a mission trip, serving in the armed forces, etc, etc.

There is a social cost to having people spend 4-6 years in college. And colleges are increasingly becoming government-subsidized vacation from the real world. We should ask whether the core benefits of college that we want to actually subsidize - education, training, etc. - can be done cheaper and faster through other means. Cut the cruft.

Look, I was a humanities major in college and I loved it. But looking back, the four year experience seems like an extremely expensive exercise in upper-class cosplay. It was a luxury that the taxpayers, in effect, paid for.