It's freedom from a spirit of greed and control. It's freedom from the diabolical lust for more. In his book, The Freedom of Simplicity, he writes,
"But the wonderful thing about simplicity is its ability to give us contentment. Do you understand what a freedom this is? To live in contentment means we can opt out of the status race and the maddening pace that is its necessary partner. We can shout 'No!' to the insanity which chants, 'More, more, more!' We can rest contented in the gracious provision of God." Foster, Freedom of Simplicity, 110.
It seems like Foster isn't alone in his perspective on consumerism and our obsession with stuff.
Check out this great video from www.storyofstuff.com: