We talked about this before, lack of a good selection process that allowed people of low competence to get into positions of power and created a bureaucracy which was largely concerned with preserving itself rather than solving problems was the ultimate cause of the decline. Simply telling people everything is great while you're unable to produce substantive change they can see tangibly deligitimizes the system. And that's precisely what we see happening in the west today, and why there's now public disillusionment with liberal democracy.
And you're absolutely right that Europe has been propped up to prevent genuine socialism from taking hold. The US didn't pour billions upon billions into rebuilding western Europe after WW2 out of sheer altruism. They used it as a way to deligitimize communism in the east. Look how great Europeans are living, look how much faster things develop under capitalism. That was the whole narrative. This is a great read on the subject incidentally, confirms everything you said http://www.hartford-hwp.com/archives/27c/046.html
This is a caricature from a Soviet newspaper from 1955. Absolutely nothing has changed.
Yup, that cartoon is ever green, and just as true as the day it was made.
It never even crossed my mind that someone might try to harm me.
Exactly, there were just not thoughts people had back in USSR. It's destruction was the biggest crime of the 20th century.