You're incredibly naive if you think that there is a society or a species that is inherently altruistic. Our survival required being selfish and this is the basis of our evolution as a species. Even other species, such as wolves, will fight over resources. The strong survive. The weak die. Countless generations of this have resulted in who we are and it is completely futile to fight it. Greed is in our nature and it is to our collective benefit that we acknowledge this "unfortunate" fact and take advantage of it. Capitalism is the only system that does. The rest only pretend to deliver equality while in reality setting the stage for inevitable tyranny. There is a reason a strong central state doesn't work. It's comprised of people who are greedy. No matter how altruistic they pretend to be, it is in their nature to maintain that power and dominate others. Power doesn't corrupt, it just allows us to express the inner person we all are but wish we weren't. It's better this power be restricted, which is why a constitutional republic, governed by law rather than humanity, will always be superior to those moral busybodies who claim themselves to have our best interest in heart.