Is a bit like with democracy. Its the best system we have... Everything we, as humans, do, will eventually be unfair, because, frankly, humans are just not fair. Sure, a select few have high goals, and might even DTRT... But thats always just a small group. The rest of us will try to take advantage of others, some coniscously, some unconsciously. Humankind will only be fair once it has ended.

I don't see how you could conclude that capitalism is the best system when it is the only one the west has tried since the end of feudalism. I think there is still plenty of progress to be made and capitalism creates more negative incentives than anything positive.