"Why do we live the way we do? What things are important to us, and why? What is a "lifestyle," anyway?"
"The question of lifestyle is more than a question of deciding whether or not to participate in those parts of the human enterprise that endanger the living Earth. In the end, it is a question of choosing who we are."
This article from IN CONTEXT asks some interesting questions that just might get you thinking about who you are and what defines you.