The problem with any discussion about taxes is that it inevitably settles upon the nebulous notion of fairness. Pay your fair share. Redistribute income fairly. Address inequality to make it fair. They all are catchphrases in the debate over how much is too much for people to pay -- and none of them adequately define what is "fair."
The problem, apparently, is cognitive dissonance. Sure, we have concerns about terrorism and the economy and health care, but when it comes to this country's inability to tackle problems, the real issue is our inability to think straight.