"Our family financial goals are different. When we have extra money to invest, we want to use it in a way that will enable us to enjoy a good quality of life in perpetuity, no matter what happens in the mainstream economy, with the weather, and no matter what our annual income happens to be in any given year."
http://www.yesmagazine.org/blogs/shannon-hayes/radical-investing-4-ways-to-live-on-a-tight-budget