I dont know what you mean by "stuff". Do you mean material wealth?
If it's material wealth, then i disagree. I think material wealth is an essential part of being free to do whatever you want to do, and for me its a need.
But of course it is not all, it cant be all otherwise the person will end up unhappy. One has to know what he wants his greater purpose to be (either helping eradicate the hunger, helping in world peace, creating a new technology that will help humanity a lot, or whatever).
For me, my purpose will be far more achievable if i'm wealthy, so its one more reason i have to get rich.
I also believe getting rich can be an end goal, but after that you must have something bigger to achieve, or you will probably get unhappy.