IMO the best 'system' that would benefit humankind - to steal and modify slightly a page out of Alexander Dubcek's book - is "capitalism with a human face".
Dubcek of course was the ill-fated Czech Party Chairman during the "Czech Spring" of 1968 which the Soviets crushed with brutal efficiency. He of course was pushing for "Socialism with a human face". Nice thought but it died a quick death beneath the treads of Soviet Army tanks.....
IMO communism never really had a chance since as envisioned by Marx his expectation was that the proletarian revolution would occur not in feudal, medieval and utterly backward Russia, but in a modern industrial society, namely Germany.
Once Lenin and especially Stalin got hold of it the ideal was perverted, brutalized and subverted beyond all recognition and really - especially in the face of a rising US post WWI - it was stillborn at birth. It was a matter of time before it would collapse beneath the weight of its own oppressive and inefficient State bureaucratic apparatus. Gorbachev of course finally figured it out but by the mid-80's it was far too late.
And today in spite of the fact China remains nominally communist I'm pretty certain the glass and glitz bank and corporate HQ towers of Hong Kong, Shanghai and a hundred other Chinese cities - not to mention an increasingly wealthy Chinese middle class - and too many million and billionaires to count, would have both Marx and Engels rolling in their graves. "Communism" as envisioned by both those gentlemen is now deader than a dodo.
"Rampant" Capitalism of course, as we are seeing today, really isn't the answer either; leave the bankers et al to their own devices and we are left with things like the 2008 economic meltdown. Somehow an overbearing "profit motive" - greed for lack of a better term - doesn't seem very complementary to the idea of a global collective good. Whatever system we do come up with we better do so pretty quickly before we reach an environmental and planetary tipping point, if in fact we're not already there....
Edited by AllseeingEye, 11 December 2018 - 07:09 PM.