Loaning something with interest can seem like highway robbery too in this day and age. What if I loaned you 1.0 BTC several years ago and you sold it for $20.00 USD then. Years later I want my 1.2 BTC back (including 0.2 interest.) How would you feel about repayment of $68,920.53 USD at today’s prices?

If this happens, I will go unconscious! It is inconceivable that if a person borrows with such interest and after a few years he has to pay the current price with a lot of value addition, then I can be sure that he will die.