The point I'm missing is why the US want this inflation so badly...

The total US debt* is now about 4,1% of US GNP. To be able to service this debt without Greek or Srilankan-style hardships and social turmoil, the US GNP would have to grow 4,1 x real interest rate.

The current real interest rate** is now at around 1,2%. The Federal interest rate is now at roughly 4,9%..

Now, surprise, surprise...4,1x1,2%= 4,9%,

So no (unrealistic) higher economic growth rates are needed and nobody in the US notices it directly in a massive decrease in their general standard of living. Biden has a shot at re-election and nobody shoots the FEDs

But...the devil is in the (de)tail...

It's simply a conscious policy of intentional "depreciation" of this huge debt. As stated..all holders of dollars and dollar-denominated bonds are the big losers: the US Social Security trusts ( $2.7 T), the Military Retirement Fund ($1.36T), (so stealthfully robbing the US weak of their pensions), foreign countries and investors $7,3T (main countries Japan, China and UK and many other international pension funds). Poor fools.

Real assets and stockholders are left unharmed as their prices follow inflation, so in short the rich don't lose... Again...Now why doesn't that too not surprise me? Who were the huge winners of the various QE's?

* https://www.statista.com/statistics/1083150/total-us-debt-across-all-sectors/

**https://fred.stlouisfed.org/series/REAINTRATREARAT1YE

https://www.thebalancemoney.com/who-owns-the-u-s-national-debt-3306124