Depends on the person. For me personally, money took care of the basic needs of my life which has helped me concentrate on more important spiritual achievments. I'm not rich though, infact I'm kind of poor right now, I make just enough to not have to worry about money, and that's all it took to make me happy. Also, I think a world based on wealth power is a little better than a world based on power through wars all the time, yet in theory, 'all we need is love.' We are all just on a path towards becoming better people, money is just part of the process, and the times we live in now.