Charging interest will always be attractive to those making the loan, as far as I can see. The difference is that under a sound money standard, paying interest on unproductive debt becomes completely untenable. 

This is partially a result of misunderstanding what money is. Debt as money is a terrible perversion of the concept of money as a ledger of deferred consumption. A sound money economy makes a lot more sense once you start thinking of money as equity, rather than debt and fiat. 

If you had to take out a loan of Exxon shares and repay it in Exxon shares + more Exxon shares, the bar for profitable use of debt goes up. 

https://open.substack.com/pub/f0xr/p/money-as-equity?r=3i492j&utm_campaign=post&utm_medium=web