So much inconvenience for so little benefit at such a staggering cost. And directed against a threat that, by any objective standard, is quite modest. Since 9/11, Islamic terrorists have killed just 17 people on American soil, all but four of them victims of an army major turned fanatic who shot fellow soldiers in a rampage at Fort Hood. (The other four were killed by lone-wolf assassins.) During that same period, 200 times as many Americans drowned in their bathtubs.
An excellent summation of the state of security theatre in air-travel.