It seems to me you presented zero arguments why socialism is bad and capitalism is good (and why people should keep believing in it).
I recommend you talking to your average Joe (or Pablo, or Petr) living (or that lived) in places like Venezuela, Cuba, the hole Eastern Bloc, Albania, Cambodia, Mao's China, or any sub Sahara African state (except Botswana and RSA) that actively pursued the Marxist dream.