Jim,
Prosecuting Bush and Co. is not about revenge. It is about the Constitution, the separation of powers and preserving the country. You can not let Bush, Cheney, et al. commit crimes against the Constitution and go unpunished without setting a precedent allowing those crimes in the future. The next president who decides to be as abusive as Bush will use the argument that those powers existed previously and will push the abuse even further - that's only human nature. The time to push things back into proper balance is now, should Obama become president. That's why I won't forgive him if he doesn't. He and his administration will have condoned such behavior.