The terrorists have won
Regardless of your feelings about the TSA, flying, the war, etc etc. you have to admit the terrorists won.
They forced us to massively overreact with a minimal of effort and sacrifice.
Our economy has had repeated shocks to it, our airlines are ailing, our travellers pay through the nose for a massive infrastructure to protect transportation.
19 evil men acted on one day. Now we have spent billions upon billions in a security infrastructure to prevent another such occurence in one focused and specific area - air travel.
Blame it on the terrorists, our government, whatever. Fact is, the terrorists have won. America has changed fundamentally because of these 19 evil men.