I don't think it's selfishness. Rather, it's a knee-jerk response to make it look like they are making you so much safer when the risk was minute in the first place. Symbolism over substance.
I see people taking other modes of transportation or declining to places because it's too much of a hassle. Making people drink baby formula. Guess what? You've just broken the cleanliness of it.
We are letting the terrorists win when they make us change how we live. We win when we don't let them.
