I'm not afraid of heights. I'm afraid of the DEPTHS under the heights, through which I will fall if I go over. 1600 feet doesn't bother me as much as 50 feet (although you won't find me up there). From 1600, death is certain, in a few seconds. From 50, quadraplegia or other crippling and disabling injuries are equally likely followed by a lifetime of suffering. No thanks.