Debt is devalued because the money is getting cheaper, I know in 20 years my debt will be easier to manage even though the payments in the nominal denomination

Debt is devalued because the money is getting cheaper, I know in 20 years my debt will be easier to manage even though the payments in the nominal denomination of currency has not changed. Inflation is programmatic in a monetary system where currency can only be created through debt, if there werent inflation then every existing dollar would eventually disappear to pay interest to the fed, and there would still be outstanding debt. The practical implications of this are that even if there is a touch of inflation then it can cause a contagion even that shuts down the banks.