Nonsense. The op originally cited things like childhood mortality, water cleanliness, access to doctors. First of all, non-capitalist economies have seen equivalent change. Look at Cuba, more doctors per capita than any other country in the world. Look at China’s infant mortality decline from 1950. Second, capitalism has existed for a long time. Look at an era like late 19th century gilded age America. Huge wealth surpluses but they largely went to the holders of capital, not society at large. Workers were violently repressed, living conditions were abhorrent. Social progress was made through worker action and democratic legislation, not through the allocation of capital and investment. Third, capitalism has also sought to dismantle these things. Private equity is buying up hospitals and significantly harming health outcomes for patients. Corporate lobbyists, especially for fossil fuel extraction companies, have been trying to kill environmental protections for years. Attributing capitalism with improvements to our society confuses cause and effect.