We (the west) do things our way. Other forms of governments can try different ways if they wish, but our system seems to produce better results (overall) than the other forms of government have.If it fails totally on its own, all effort and resources put into cold war were completely unnecessary waste
There is no need to blockade or sanction Cuba and North Korea.
And definitely no need to keep up the anticommunist propaganda and lies 30 years after fall of USSR.
Communism is an existential threat to capitalists (who btw don't even know the meaning of words greed and corruption). Thats why they won't let off
The biggest problem with any form of government is humans and human nature.
Free market systems try to harness human nature and Communisim tries to suppress it.
I have yet to hear of any system of government without serious problems (again, humans), but free markets seem to at least provide tangible, positive, results for large portions of the populace.