Capitalism has helped create the highest quality of life of all of human history. The fa t that you can even discuss these ideas instead of scrounging for food is proof of that.
I'm obviously being exploited for my labour. Paying me so that I can support my family, and live better than most kings in antiquity really just shows how much I am exploited.
I would argue that capitalism allows for more efficient use of resources. It does this not only through basic supply and demand, but through incentive to improve efficiency for profit.