I've got news for you, the Soviets defeated Germany in WW2, not the Americans. The US pursued its own interests, and rightly so. Nobody is blaming them for doing that. What bothers European is how the US PORTRAYS their involvement as "we save your asses", which is ridiculous.

I am so sick of America being blamed no matter what.

Then get the fuck out. That's exactly what Wallace wrote to Truman http://claver.gprep.org/sjochs/wallace%20letter.htm

"How do American actions since V–J Day appear to other nations? I mean by actions the concrete things like $13 billion for the War and Navy Departments, the Bikini tests of the atomic bomb and continued production of bombs, the plan to arm Latin America with our weapons, production of B–29s and planned production of B–36s, and the effort to secure air bases spread over half the globe from which the other half of the globe can be bombed. I cannot but feel that these actions must make it look to the rest of the world as if we were only paying lip service to peace at the conference table. "

See, "lip service". That's what irks people outside the US. It's not so much what the US did or do. It's how it portrays its own actions.

https://www.youtube.com/watch?v=uZwuTI-V8SI

"What's worse I think" part is spot on.

So you're not obligated to do anything. That's how Americans try to make themselves feel indispensable (dixit Hillary). Noone is asking you to, you just like to pretend that you did it for others instead of yourselves (like in WW1 and WW2). Nothing wrong with that, but stop taking others for stupider than they are.