Why are we not afraid of driving without a seat belt in the same way we are afraid of heights? Why aren't we afraid of a blow drier in the bath tub the same way we are of the dark? Sex without a condom vs poisonous animals?
Natural selection hasn't accounted for our recent trappings. Interesting.
Ideas from http://www.youtube.com/watch?v=yIMReUsxTt4 . Dawkins/Pinker's interview.