Capitalism has done a lot of good in the world, and it has also done a lot of bad.
The problem isn't that capitalism exists, it is that far too many people treat it as a religion rather than a tool.
I don't think Humans can ever do anything other than capitalism because at the end of the day, a farmer making food and delivering it is just going to STOP working when he finds out a daycare owner has made $15 in 3 years without actually taking care of kids. And everyone just bubble wraps the explanation - and then they disallow anger. The farmer then writes up a proposal for starting a daycare and the food stops flowing. Everyone dies in communism.
Everyone dies in capitalism as well though. Everyone dies generally at some point in life.
Reality is, currently most of us are wage slaves and I'd love to work a little less and still be able to afford life. An alternative to capitalism would be socialism and killing corrupt people off.