it's a system with a proven track record. Countries with socalist have some of the highest standards of living in the world.

Northern Europe
Canada (kinda, we're too capitalist right now)

Maybe someone could try Marxist Communism. I don't think it would work but it's never been tried. Stalinism, Leninism and Maoism are not even close, nevermind Castro. Marx calls for the eventual phase out of all government and no one wants to give up the power.