Its like drugs. Once you get addicted you want stronger and more hard drugs as time passes.That's also $110 billion in depreciating USD as costs for labor and inputs go up because the Fed keeps cranking out USD. Financial stimuli have diminishing returns over time. They're going to need a bigger amount and more often as the US is addicted to that excess supply for growth. Either they stop it and the markets crash or they continue kicking the can down the road while the US consumers' buying power is being sapped. Who's gonna give first Wall Street or Main Street?
Same with the US, they are now like a drug-addict needing printing in order to function. And guess what, as time passes they need more and more printing