Ok, I'll humor you, I'm no longer scared of your avatar.
You know why Russia must be defeated utterly? Because this Velikorossiyan imperialism needs to be removed from the Russian nation, just like that Prussian cancer which caused IIWW was removed from Germany. Russia for centuries remained the same: apathetic masses ruled by thugish aristocracy. Their "messianism" of Great Russia, Third Rome, Panslavism, etc. caused unspeakable harm to Russians themselves and every nation living around them.
They need a hard reset so the medieval mentaility is purged out of their minds. They need to lose so badly in Ukraine so no Ukrainian war repeats in the future. And Ukraine needs to win as it is the clear victim. Fucking simple.