What really gets lost in all this 'buffer state' cynicism, is these were newly independent, democratic countries asking to join a defensive alliance of other democratic countries. We should want to encourage and protect fellow democratic states where we can, we should want to see peaceful democratic systems of government spread and take root, it's in our interests to do so, and it shows we actually believe in our system. I get that sometimes you might want to be pragmatic, and the West was in the case of Ukraine, but ultimately the reason Putin invaded was because he refused to accept Ukraine's right to determine its own future as a Western facing nation, and the reason they are fighting so valiantly, is because it's a cause they still think is worth it.