Anyone who takes on debt like that is increasing the risk to their lives. Sure, if everything follows the mean - good job, good health, good relationships - people on average come out ahead after an expensive education. But the downside risk is amplified. Get sick, and there's nowhere to turn and you're stuck servicing that debt for the rest of your life.
It's a problem that crosses party lines. Both finance firms and universities have played a role in setting this system up. But millenials have to vote in numbers and advocate for making student debt dischargeable in bankruptcy -- this is the whole social point of bankruptcy law dating back centuries, to reduce crazy downside risk to individuals.
Income-based repayment plans already exist, limiting your payments to 10% of discretionary income, with full forgiveness after 20-25 years if any balance remains. "Servicing that debt for the rest of your life" is not a thing.
No doubt about it if student loans were bankruptable then it would be ripe with fraud.
Houses, cars, businesses, etc. can all be surrendered. Knowledge cannot. A degree cannot. Why should it be dischargeable if the recipient cannot discharge the benefits?
Ethics has little to do with it. The lender has money you want, and you pay them for the privilege of using that money for a while. Supply and demand.
One can't collateralize a mind aside from claiming a fraction of the attached body's output.
https://studentaid.ed.gov/sa/types/loans/interest-rates