[The quote goes something like...] "What is actually giving this New Money value? It *steals* money from the money that already exists."
WRONGGGG. That only works in a Ron Paul/(Fixed) Gold Standard world, where a dollar in circulation is matched up one-for-one to a dollar of gold in Ft. Knox. We operate in a Better Piggy Bank world where, no matter how much value you have on Reserve, it is the shape of your Piggy Bank that lends credence to the value of your currency. Ye ol' fiat money -- it's is de-coupled from a dollar-to-dollar representation.
Let's say you had $100, and wanted to keep it safe. You have two neighbors who both have *actual* safes in their home! Wonderful! And both have offered costless space in their safe for your $100. Wonderful again! But there are differences. While the safe is exactly the same, Mr Brown has an unkept lawn and a dilapidated house, a jalopy for a car, and a family life that might kindly be described as "noisy." Mr. Green's yard is picturesque, as is his house. His car is sensible, mechanically sound, and gets a home wash on regular occasion. And his family life is, "family" grade. So, who do you give your $100 for safe-keeping? You go to the Better Piggy Bank. So, the U.S. operates what the world sees as the best piggy bank.
"But inflation!" Inflation happens with grotesque dilution, for sure: people lose faith in their fiat money. But that is a result of dilution, not of economic processes. *Economic* inflation happens when "Too many dollars chase too few things to purchase." This is what drives Adam Smith's Invisible Hand -- this is the soul of Price Discovery & The Efficient Markets (a rock&roll band I would LOVE to see). At any event, inflation in 2019 is being used as a gauge for both the dollar's desirability and for that slight edge that comes from the economy being just a touch hotter than absolute equilibrium. It's thus a proxy for nice things, sure -- but to argue Inflation Is Necessary[!] is like arguing that because I'm hungry, therefore I worked hard ---- "Nah!" Sketchy logic for another day...