What system has a better record of lifting people out of poverty? In fact the most impoverished nations are the least "capitalist" ones, in the free-market sense ("crony capitalism" as practiced in the Mideast, etc, isn't "free" and poverty is endemic there to a much greater degree.)

What system prevents conflict? Surely not Marxist systems which are entirely predicated on conflict between classes and preach "permanent revolution."

What would you replace money with -- barter? How would that work on a global scale?

Your answers just seems to raise even more questions.

Two major problems, yet they aren't just problems that come with capitalism? My main argument against current capitalism is the fallacy of endless expansionism, i.e. It's a finite world, and in the pursuit of a so called 'better' standard of living for all (the argument by capitalists for capitalists) we are in the process of overpopulating the planet and destroying it at the same time.