College probably is not worth it for a significant minority of the people who attend, especially when you add into the mix the fact that many of them could attend a good trade school or other non-university educational program to learn a useful skill.
I am in the recruiting business and most companies are screaming for technician level trades people. These positions can earn anywhere from $20-30 per hour if they have the right background. Mechanics, electricians, etc...$40-60k plus OT. It’s out there...for those who aren’t the college type, this is where its at!