Just like easy mortgage money inflated the housing prices, apparently easy student loan money has driven up the cost of college. Take a look at the rate of inflation of college prices vs. everything else - its astonishing.
Of course, just like the mortgage bankers, when the bubble bursts and the overly indebted college graduates can't pay their bills the student loan industry (and SALLIE MAE) will expect the taxpayers to bail them out.
And for every student who trapped him/herself in debt there are many others who paid their own way through school and have no excess debt. There are many ways to get yourself through school without being buried in debt.