Whilst there are occasional examples where debt actually makes debt free or even negative value for the creditor, the examples are few and far between. Generally, you will read about such examples in the normal, non-financial press. That's how rare they are.
A mortgage's interest rate is designed to outpace inflation, so it almost always does.
Hmm? If you take out a fixed-rate 30 year mortgage that is pricing in inflation at two percent, and inflation moves to six percent several years later, you are in much better shape than you would be otherwise, as you get to pay back that loan with cheaper money.
If you buy a 10 year t bill expecting two percent inflation, and inflation goes up to six percent, you are going to be pretty disappointed.
I know that lately inflation has been hard to find... but it's pretty uncontroversial that these sorts of things happen when the rate of inflation changes.
Now, maybe you are saying that inflation, as long as it doesn't change doesn't matter, and while I still disagree, you have much stronger ground to argue from.
A mortgage's interest rate is designed to outpace inflation, so it almost always does.