What does the West get out of it?
Putin is hurting by his abject failure to sweep through Ukraine as he believed he would. His military weakness has been exposed. Thousands of Russian military personnel - including senior officers - are dead and billions of dollars worth of his hardware is destroyed. Not one American or British soldier has died. Bargain of the century.
I understand what Ukraine gets out of it - lots of free military hardware costing billions of pounds/dollars.
It's not like they are putting the weapons in a cupboard and counting them every night like they were gold coins. They are using them to hurt Putin at the cost of Ukrainian lives. Many of them knew as much about combat a year ago as you and I do.
Let's imagine that in 5 years time, Argentina invades the Falklands. Would Ukraine give us some military hardware and equipment, or help us in some other way?
Unless Argentina posed a threat to the security of Ukraine probably not.
Putin and Xi are the main enemies of liberal democracy and freedom. Ukraine is Putin's biggest problem.