Does anyone actually still believe that these debts will all someday be repayed? Does anyone even believe that the amount of debt will go down, rather than up, over the course of any length of time? Even a day? I don't, which raises the question: how does a world where debt monotonically increases indefinitely work? Can that happen forever, in which case debt has just become a standin for currency (that allows people…
The interest rate (and hence service payments) on such debt tends to rise. The lenders just price the possibility of distant default and demand fatter checks upfront.
> Or does it eventually go kabloie?
I am not sure all scenarios are as drastic as you describe. A bunch of countries have a privilege to issue debt in the currencies they themselves control and can inflate their way out of it.
People who have paid up a portion of their mortgage can get interested in a HELOC, provided that the interest rates are attractive, or even buy a second house / rental property once the credit situation allows them. Their growing debt is not necessarily an indication of a bad balance sheet - they have tons of collateral and just choose to use the debt mechanisms when it makes sense for them.