Capitalism has spurred innovations innumerate, lifted billions upon billions out of poverty, and made societies entrepreneurial and free - and it continues to do so to this day! Especially when combined with democracy, capitalism is surely the greatest force for social improvement the world has ever known. The most marvellous thing of all is it it goes with the natural instinct of humans to do the best for themselves and their loved ones.
Contrast socialism. It has left a legacy of bankruptcy, inefficient public sector bureaucracy, and welfare scroungers in this country (and countless others).
All hail Adam Smith and the invisible hand.