Well, I see three problems with your argument. One of logic, two of warped facts.
First of all, even if we accept facts as you present them (which I do not, more on that latter), the fact that both sides are equally corrupt doesn't mean it's ok to support one of them for the hell of it. The correct position would be to reject both of them, condemning both US and Russia. Can you imagine me saying "Thus, there is no significant moral difference between Assad and IS, and I support Assad due to it, ceteris paribus, I like mustachioed men"?
I think you actually don't understand how me (and Helgo, although I don't like to speak for him) think. Sure, we are willing to defend our "country" (the EU in this case) in case of aggression. But we are equally willing to oppose our governments if we feel they are morally wrong, no matter who the other side is. True, I'd be on a barricade if Russians troops start popping up in Estonia. But I'd also be on a barricade if Belgium was participating in a NATO effort to pull that kind of shit in Russia, this time a barricade in front of my own government.
This I feel is the fundamental error of your position.
Again, we see things differently here, and I think it's likely that you don't understand my thoughts just as you say I don't understand yours. I, and most pro-Russians, do not view Russia's actions as fundamentally reprehensible, because we believe that we are merely responding to the unlawful actions of the USA, which has supported an unlawful coup in Ukraine and has since pressured it to become a part of NATO. Also, we believe that the current war in Ukraine was started by the Ukrainian government, not rebels, and is being fueled by, again, the USA, via political pressure and material support of Ukrainian troops, and that our support of Novorossiya is, again, merely a response to that aggression. Thus, we do not think about protesting against Russia's actions for the same reason you don't think about protesting against American support of the Ukrainian army and of the armed conflict in general - both sides believe that the other side started it first.
Then they are the factual mistakes. First of all, that obsession in seeing this as a contest between the US and Russia. The US doesn't care that much about Russia. All it wants is Russian help in dealing with stuff like Syria and Iran, and for Russia not to invade countries in Europe so it can focus on Asia. The US is willing to forgive a lot to get Russia's cooperation (For example, the proposed "reset", only a year after Russia invaded a US ally), but at some point has to take a stand.
As much as I would like to claim that my opinion is formed on solid facts, it's not - I cannot say that I am privy to the talks that go on in the White House, and so my opinion about the US's government's motives and opinions is based upon interpretation of facts instead. And I believe that your opinion about American government's thoughts and attitudes towards Russia is based upon interpretation as well, that you, can make no better and no worse a claim of your views being objective than I can.
Second, you vastly mischaracterize the US's and Russia's actions. For example, the sanctions were started not because of Donetsk, but of Crimea. Surely, you cannot blame the US for the takeover of Crimea?
I can blame them for the takeover of Kiyv, at least in my opinion, which may or may not be, objectively, closer to the actual truth than your opinion, seeing how both of our opinions are based around differing interpretations of the same facts.
You blame the US for taking too much steps to support the Ukraine army. The US has not even sent weapons. It also has very little says on what strategies the Ukrainian Army takes.
You blame the US for not reigning in Ukraine's ATO, but Ukraine already tried the peaceful approach. And lost Crimea for that. How could we know that reigning in the attacks on Donetsk would defuse the situation rather than just cause the DNR to declare independence in another fake referendum? You argument is essentially that the fight is our fault because we didn't give everything up to Russia.
And your argument is that the fight is our fault because we didn't give everything up to NATO. And before you start calling me a fool, please remember Baffler's comment about how both of us were equally irrational in our debate.
Finally, I just love how in your narrative it's the US and not Russia who is fuelling the third-party conflict, despite the fact that Russia sent weapons and soldiers, and the US never even sent a gun.
No, but it sent money, advisors, drill instructors, non-weapon equipment and tons of political pressure to continue fighting. In my opinion, this is because it didn't have to send military help - the rebels are a small group on a shred of territory, while Ukraine has exponentially more men and guns, and can wage war on its own.
In essence, I am just trying to state that no matter how firmly we believe in our differing opinions, we are both biased and irrational, and that means that our opinions, based upon different interpretation of the same events, are most likely equally detached from objective truth.