Americans owe more on student loans than on every credit card combined.

US consumer debt by type ($tn). Student loans were the smallest of the three in 2003; they have since overtaken both credit cards and car loans to reach about $1.7 trillion.
- College prices ran far ahead of inflation for two decades while federal loans were easy to draw, so students borrowed the difference.
- Unlike a mortgage there is no asset to repossess and the debt is almost impossible to discharge in bankruptcy, so the balances simply stay on the books.
- Wages for many graduates did not climb fast enough to clear the loans, so balances compound rather than shrink.
A generation borrowed against future wages to buy education. The bet only pays if those wages rise enough, and for millions they have not.