Pic related. For a miniscule fraction of the US annual military budget 80 years of Soviet stockpile has been destroyed or put out of action. For the price of zero NATO lives, Russia's military has been decimated in its own backyard. And the creme de la creme of Russian military personnel, the professionals, have also been retired to an early grave.
It will now take decades, if not a century given Russia's not the Soviet Union, to rebuild the stockpile Putin possessed before the 3-day SMO.
America's job here is done, it set back Russia's military as a threat for decades and given to the Russian paranoid mind this is an existential war where you win or the world dies, it's the perfect timing to roll back any support and let Russia have the Ukraine, (whose interests never actually mattered to America in the first place) without escalating this affair into nuclear war.
With Russia's military back to the 1920s, America can focus on the real threat that is China.
The Ukraine war was NEVER about destroying Russia, it was about making them waste their entire military into it. This also opens up the possibility of a future war against another proxy which will benefit the American MIC.