Inflation is stealing, the recipients of the pilfer are the ones who print the money out of thin air and spend it, and the ones who are the pilfered are the ones who work hard to save money, and store it away, and return to it to find it worthless.
60 years ago new cars cost like $300. Today they cost $20k. Had you stored "A car" in cash 60 years ago, today you would not be able to buy one. A currency is supposed to be a stable store of value, not a one in constant decline. Gold is money, it does the same thing, but in reverse, because it can't be diluted.