Capitalism is natural
As long as there have been economic systems to regulate the interaction of people, there have been people taking advantage of it and expoiting other members of that system, so why rant on capitalism when it's only another possible form of economic interaction with it's advantages and disadvantages like every other economic system? There is no doubt that the problem of people suffering does not lay in the depths of the system but in the people using it. And to a certain amount on the suffering people themselves, as they hardly ever want to escape the system but only be on the profiting side of it.
The only way to prevent suffering is to ensure the righteousness of each and every member of society, a good will and the will to act in a way that does not harm anybody. Seen that way, there already has been an attempt to ensure the righteousness of the people, it's called religion. In facts, religion as a way to enter people's minds and try to make them good from the inside (some might argue through fear), was not a bad idea, but whoever thought of it underestimated the human power of destruction. In retrospect it is no big surprise that the concept of religion failed the same way every economic system failed. It was never the system that hurt people and always the people that hurt people, assuming that hurting people is what this rant about capitalism is supposed to be about.
Thus, if the nature of human kind is not build for justice, why should we try to build a system that works against our very nature? But even if one comes to the conclusion that there is no way out of humanmade misery, we should not take that knowledge as a reason to stop fighting for the one's who stumbled into this system by no fault of their own. At least the children, who have not yet contributed to what brings so many to the brink. And the arts, being something beyond our understanding. If exploiting each other through systems we build ourselves is the worst side of people, the arts are probably the best.