Yeah there this this problem where sellers want to acquire appreciating money and buyers want to dispose of depreciating money. So, the goal is to somehow balance it out so that you have money that both seller and buyer want to use. The rule of thumb is 2% inflation. Of course you might argue that 0% inflation is better and -2% as a demurrage/negative interest is better because this means prices stay the same and savings are not devalued.