The concept of opportunity cost has nothing to do with the "average individual" it is the cost of the "next best alternative usually forgone". I did not go to college, during most of my "college years" (18-22) I worked a total of 50-80 hours at as many 3 different jobs. That was my next best alternative. I still work 50-70 hours, between different jobs and businesses and transitioned from working class to upper middle class. In retrospect, I can see, for me, the opportunity cost of attending college would have been very high...