[Ryoku]

At this point, airport security is there to make people feel safe. That's it.

Do you really think a plane full of people who know they will die unless they do something about it, will let a terrorist get away with it? On the other hand, do you really think so many people would have continued to fly as often as they did before 9/11 without some sort of reassurance that something is being done to prevent highjacks?

Terrorism can be anywhere, and it does not need an airplane to happen. Now, if terrorists are not going to use planes to cause terror then you should be thinking on the next thing that's going to be used. There are many uses for perceived security and not all of them involve keeping people safe.