Inflation is an important component to a healthy economy; we WANT inflation and the FED targets inflation at 2% per year. Why? Because if we didn't, people would hoard their money, which is then money that can't be put back into the economy. When you deposit $100 in a bank, the bank doesn't store that money in a vault (only a small percentage must legally be stored), the bank loans that money to someone who is, for example, looking to expand their business. This is same economic principle of "efficient market allocation of resources to where they are best utilized." Without inflation making rich people's money worth slightly less every year, they would have much less of an incentive to invest it (ideally you invest your money to get a rate of return at our exceeding inflation if you want to maintain the inflation-indexed value of your money), and in the case of deflation you really have problems because then the absolute incentive is to hoard your money since just holding it becomes an investment in itself.
The problem here and elsewhere is that economics used to be wholly philosophical, so a philosopher's thoughts on the origins, drivers, and offsets to inflation used to be all there was. Now with econometrics, we can test these fundamental truths and, like so often with "proven science," find the evidence wanting. Further, claims like "inflation and money supply are feedback loops" aren't as supported as many people ideologically NEED them to be. Add to that the precious metal lobby, who love to fleece anyone they can with their "hedge against inflation!!" bit, and you get a mess.