My theory is that most of it is irrational fear. It is similar to sharks, more people die from drowning but the time and expense spent on shark patrols, killing sharks etc because of the fear of "terror from the deep". I suspect people fear, and therefor complain, about airports and aircraft because they may "fall from the sky and kill them". The day after the Navajo down at Aldinga, SA, people are on the TV saying the airport/aircraft need more regulation because "they can just fall out the sky'.