I wonder how many lives lie at the foot of the ludicrously irrational assumption, "It hasn't done us any harm yet so it must be safe"?
Low bulkheads on merchant ships
Insufficient lifeboats ditto
Hydrogen in Airships
Boxcutters on aeroplanes
DDT
Thalidomide
Launching Shuttles in freezing conditions
Living on volcanoes - dozens of times
Building nuc plants on the San Andreas fault
Or on a coast subject to Tsunami
Putting oxygen generators in the hold
Letting Iran get the Bomb
Need I go on?