I've served jury duty twice. While it's something I don't "want" to do, it is your duty. Think about it, the upholding of the law is dependent on people like you and me. If you've ever felt there was any injustice in our legal system, well you don't get any bigger stage to make an impact on fixing that than in jury duty. If you don't take that place, then who might? Someone who actually might actually "want" to serve jury duty. In my jury pools we had a lot of disheveled, unemployed and uneducated people because they actually could make time for jury duty and could use the money. THESE are the people I want to decide who is guilty and who isn't? Would I want these people presiding in the jury if I were to be in court? Absolutely not, we need more responsible, right minded people to serve jury duty. Unfortunately these are the same people who just don't have time to serve because they are out busy making money, or taking care of their family, or just being responsible citizens in general. But we need these people to serve or else we'll just keep seeing crazy injustices such as OJ and Casey Anthony.
On a side note, serving jury duty will be a very personally rewarding experience if you do serve. Not only will you have a much greater insight on how the legal system works, it's one of the most surreal experiences of just taking a microscope to society in general and how it works. Don't squander this opportunity to really absorb the dynamic of our culture and society by turning off your brain through the entire process. If you make the most of it, you'll be able to really observe some really interesting things.