Couldn't agree more. Some progress towards it has been made on countries with leftists reforms, but sadly due to constant warmongering, coups, infighting and economic blockades a truly socialist country has never existed.
Kind of tends to happen with any radically utopian-revolutionary regimes. Either they stick to their ideals and get unceremoniously wiped out by the nearest meaningful power that disagrees with them; or they do what it takes to survive and fatally compromise their ideals in the process (as the sort of ruthlessness required then rather tends to permanently skew their problem-solving paradigm).
I'd recommend sticking to the moderate reformist approach. Less large-scale ugliness all around.