Only if your interested in global warming, oil shortages, terrorism and the waining of U.S. status.
An intersting article in the NYTs about the benefits of the U.S. focusing it's technology at conservation of energy, as a way to combat terrorism and aid capitalism. A long article, but some good points (even from a guy who's not convinced).
http://www.nytimes.com/2007/04/15/ma...c98&ei=5087%0A