Anyway back to the topic - we europeans look at this war as existential threat to our democracy, its not about just Ukraine anymore. That's why thousands javelins and stingers were provided by US, UK and other states which allowed them to defend till now. After Ukraine, it would be increasing russian circle towards west - baltic states, Poland, Slovakia, Hungary, Romania. Thats 100 million of people who know very well how horrible the life is under russian oppression and terror.
Its also in US interests that this pans out with russians losing and stopping their imperialism - Europe is by far the biggest US ally (count 500 million relatively rich people), losing it would mean US power becomes progressively marginal in this world. Nobody free wants that, there are plenty of bullies out there, small and big.
It should also be said that, who is a bully depends on whose interests one happens to align with. Maybe transatlantic interests are always magically aligned forever but somehow I doubt it. One should wonder why or how that comes about, and at whose expense.
Who gives a f*k what some murderous dictator wants or not. That's undefendable position these days. He had done enough evil in this world in past 20 years and cost lives of millions civilians including many children that he can shake hands with Hitler, Stalin and Mao. Anything Russian is a big no-go. I guess they really have to build their tanks from wood now, since they failed with Armata tanks so badly (but for Russia predictably).
Do you also point out some traumatic events from Hitler's childhood as some form of excuse for his actions? He was also just trying to expand his country to what he seemed as more ideal setup and give it better future. This abhorable little man stands against everything western democracies value very dearly.
He managed to do 1 thing almost perfectly though - unify whole Europe and in fact most of the world in a way that leaders were failing for decades. Its just that its against him and his crooks and murderers. Hopefully the momentum will remain for long. As they say, the society is defined by common enemy, and well he is the best there could be right now. He would be comical if his actions were not killing hundreds of people every single day right now.
It has nothing to do with imperialism as i don't see any annexations made by the US, nor puppet governments.
Ukraine, on the other hand, had territories chipped away from it, separatists backed up Russia for years and years, and now a surprise attack without forward notice. It's completely incomparable to Iraq.