also air bags dont always go off. i rolled a car over 3 times and no airbag. but if i were to plow a car head on at a good rate of speed. id rather hit an airbag then the windshield or something else. specially if you get in an accident that you dident see coming (someone pull out in front of you from a side street while your looking the other way) **** happens and air bags do save lifes