You might be right, but I can guarantee you that if your view prevailed at any point during the Cold War, human civilization wouldn't exist today. People aren't using "they've got nukes" as an excuse, it's the end game. War sucks, but even for the Ukrainians this is infinitely better than it would get if a genuine nuclear exchange took place, with World War 3. And even if everyone manages to restrain themselves enough to keep it a limited nuclear exchange and not the total destruction of humankind, the War that follows is going to be worse than anything we've seen yet.