"People are born selfish which is why we should go with the system that incentivizes maximizing selfishness" is such an insane argument even if the presumption were true.
Right? If communism were already in place, then appealing to selfishness would be a reason to keep it in place. 99% of people would be worse off moving from communism to capitalism, so being communist is the best for virtually every person.
Society: is just endless complicated laws about money and property written over centuries that vastly exceed what a single human could possibly learn in a lifetime
Yeah sure we left biological determination behind when we made shit like stone tools and fire but have you heard about this super innate thing called human nature that happens to justify all my ghoulish tendencies? It's super convenient!