There is no war that will be more important than this, unless we're talking something with China, but then that will be world war 3 and the west will then switch to war economy. All the support now is just chump change for the west, the entire west is still on the peace time defense budgets. Most of the donated equipment is old stuff, that would be written off anyway in a couple of years.
And it's not like west stopping support to Ukraine would somehow magically jump start the world economy. The war is one of the factors behind the economy issues, but not the only one.
In fact, cutting support might make it worse for the west, as it might encourage more similar wars around the world and thus more instability and global supply chain disruptions.
The best way for the west to get back to peaceful and prosperous ways is to slap Putin and show the entire world like this will not be tolerated.
Russia is ed, they don't have long term means to drag out the war and they can't compete economically with what is 60% of world's GDP. They were planning for a short war and then a bit longer sanctions similar to the ones in 2014, what they got is much, much worse. They are desperate to find a way to win, but at this point it's just a sunk cost fallacy. At this point it's only a question of how badly will they lose, and how many people will have to die before that.