I don't think the problem is money itself. The problem is greed.
If we get rid of money, something else will come along and those, who are now greedy bastards, will still be greedy bastards and we stay in the very same situation we are in now in. 
I think money is a tool and not a goal and I wish more people (especially the wealthy ones) would recognize that and use their money to create rather than just aim for more profits and luxury good...
Maybe that's the thing I would change about society: create a new viewpoint of money and make people wanna earn money to create more things, rather than create things to become rich quick 