Money is defined as any commodity or token that is generally accepted as a means of payment. But, when used as a commodity, it is only as good as the value it has at that time. Inflation lowers the value of money. Although there is no commodity that doesn't fluctuate over time, the value of the dollar also changes. To get the most for your dollars, a low inflation rate is needed. The main problem with money being used as a commodity is that its value lowers with time. For example, last year I could go to the grocery store and pay $80 for a bag of groceries. This year, just months later, that bag costs me $120. I need more to pay for the same amount of items