Socialists believe in their very heart of hearts that the must impose socialism in order to achieve a kind of common salvation for those who have achieved the higher consciousness of the Perfect Socialist Man. No price is too high for humanity to pay, you see. Our eternal lives are at stake. You all will thank socialism when it finally succeeds.
Now, thanks to Keynes and his wacky economic theory, socialism can have infinite prosperity via the mechanism of infinite fiat money.
It is all perfectly explainable. It is a grand, systematic mirage crafted to achieve the Secular Millennium.
see:
Marx as Millennial Communist by Murray N. Rothbard
http://mises.org/daily/3769
or
http://mises.org/journals/rae/pdf/R4_5.pdf
Early Secular Communism by Murray N. Rothbard
http://lewrockwell.com/rothbard/rothbard294.html
The useful idiots may believe that claptrap but the men and the top running the show know that its all about pure power and domination. They like causing pain and destruction.