Why does Marxism still exist when it clearly doesn’t work?

Marxism still works…
Marxism is a dogma. Despite everything pretended by marxists, marxism – as an ideology – is an article of faith. And as long as there are believers who continue to promote a faith, any faith, that faith continues to survive. To work…
On the other hand, there is a non-ideological side of marxism. A pre-ideological component, if you will.
The analysis made by Marx before reaching his conclusion. Before reaching the conclusion that communism is ‘the answer’…
The analysis was correct. Furthermore, even some of his predictions had been right. Our current obsession, induced by Milton Friedman, with profit as the ultimate goal of human activity has led us into an impasse.
But Marx’s solution – to a very accurately defined problem – was an abject failure. Communism was a failure. Each and every time!
But marxism still works… We, some of us, continue to believe according to this ideology…