Would you be willing to pay a demurrage fee on cash equivalent to inflation if it meant no inflation in the unit of account? The difference is small but important. Such a currency wouldn't lie to you. The money illusion would be gone. You can plan decades ahead. You know what the negative interest rate is going to be. Loaning out the currency avoids the demurrage fee on cash. So a 0% loan would maintain your savings.
Why doesn't this happen? Two reasons, people have loss aversion so they prefer being lied to through the money illusion. They get to blame you when the truth is that they are at fault. If they preferred taking the loss they wouldn't have to find a scapegoat. The other reason is that inflation has an uneven impact on the economy. Some gain and some lose and many people want to be winners or at least for there to be the possibility of winning, even if it is a detriment to society overall.
Why doesn't this happen? Two reasons, people have loss aversion so they prefer being lied to through the money illusion. They get to blame you when the truth is that they are at fault. If they preferred taking the loss they wouldn't have to find a scapegoat. The other reason is that inflation has an uneven impact on the economy. Some gain and some lose and many people want to be winners or at least for there to be the possibility of winning, even if it is a detriment to society overall.