Time.com has a very interesting article about risk and people's perception of risk. It starts off talking only about car accidents and seatbelts, but eventually discusses the reason why people look on risk differently. For example, why are people afraid of shark bites, when you're dozens or hundreds of times more likely to die to a lightning strike? Meanwhile, we've spent hundreds of billions of dollars prosecuting a War on Terror which has circumscribed our liberties and weakened our nation, when a few billion spent on AIDs awareness, driver safety awareness, or an ad campaign about the dangers of too much sugar could have easily saved far, far more lives than we've lost to terrorist incidents in the past century.
It's definitely something to think about. Ultimately, it seems we fear things we should not, and do not fear things that we should.