What gives the US dollar value? Wood pulp? The ability to print more? What gives the USD value is the same thing that gives anything else financial value, perception. The government being able to print more dollars at will is a negative, a debasement of the currency. Cryptocurrencies with limits on how much can be produced don't have this problem. Ironically you've done a good job of describing some of the problems inherent to fiat currencies which some have turned to cryptos to avoid.