Reality: With a few hot water bottles strapped around me, I could get staggering amounts of liquid onto a plane. I would theorize that VERY few people have both the skills and the desire to actually suicide bomb (or even hijack) a plane... Otherwise, why isn't it happening more often?

Planes running into buildings are pretty spectacular, but even if we removed ALL security measures, airport security would be WAY down on the list of things that result in needless death.

There are infinite cheap/free ways to terrorize people if you're willing to die. There is no way to be secure from it short of spending gazillions on preventative measures.

Being terrorized by lunatics will always be a cost of being hated. We should stop spending significant money on it, consider it a painful cost of being free/prosperous, and focus on not being so worthy of hate.