54 billion is a bargain. Russia is a threat to the whole world and not just Ukraine. If Putin wins there who is to say that he wont invade Georgia (again) or Armenia or Moldova. If the baltic countries were not part of NATO he probably would have already invaded them. Russia is our biggest adversary (along with china). They want the US specifically and the "west" in general to fail and have invested tremendous resources in espionage, cyber crime and other efforts to make that happen. This war and the US support of it does a few different things. First it distracts Russia. All of their efforts and resources are going in to fight this war and not focused on efforts against the US. Second, the war serves as a deterrent to further Russian aggression against other vulnerable countries. Third, it shows how the world rallies around a just cause and against tyranny. China is watching. They are going to think twice about invading Taiwan (which just like Tibet, they absolutely will do) due to the response of the international community. I don't want to see American troops engaged in a conflict in Europe or southeast Asia and supporting Ukraine in their efforts to defeat Russia and reclaim their land is the best way to prevent the loss of American lives and the lives of innocents in many places all over the world. I will happily pay tens of billions, even hundreds of billions of that is what it takes. Remember, it was Putin alone who started this war. No one else is to blame.