I'm just saying that, for someone working an engineering job, that is not generally a life-ruining amount of money, especially in comparison to the increased earning potential that a degree affords you (which is, I suspect, why they get away with charging such exorbitant tuition in the first place).
If we double the number I gave to $60,000, that's a lot more, and starting to approach life-ruining territory, but I'd say still falls a bit shy of it for an engineer.
The first time I attempted school and dropped out, I started getting a ton of advertisements for for-profit universities in the mail. I knew that they were often scams, so I threw them away, but I can totally see an alternate universe in which I don't know that and end up with a boatload of debt for the rest of my life.
And you aren't even paying for the same sort of things: Many colleges have sports teams in the US, for example, and the degrees take longer in the US. For example, you don't have to get an undergraduate degree in Norway to become a doctor so you spend less time actually in school.
For people in many European countries, this is an absurd amount of debt to get a university degree.
Edit: For context: About 20 years ago, my university's annual fees was $15000/year for out of state students, and $4600 for in state - in today's dollars. Now that university charges $28K for out of state and $8.3K for in state - almost doubled after accounting for inflation. In other nearby universities I see people paying $15K/year for in state. This is a huge increase in two decades.