Bitcoin is not a way to pay Dept it's a way to transfer money freely, yes it's value increases over time, but it can do even more if we keep it and use it. this my note to all forum members
I don't know what kind of debt you mean but I can also tell you that on a contrary apart from being used for payments, when you hold to an increase of values, you can be indebted to say you've achieved a financial relief to an extend which in either ways, your acquired profits can be used to clear up your debts.
Also likely, if a creditor and the debtor are exposed to bitcoin and also accepts bitcoin for payments, of course you can pay off debt with bitcoin.