How many people have been robbed in THIS restaurant? How many killed?
How many times has my house burned down?
Never!Ok boss with that logic I will go ahead and cancel my home owners fire insurance policy!

How many times had Ebola broke out at US Hospital?
Never!So we should not have training and prevention before it happened?

How many times has my boat ever capsized/sunk?
Never!Ok I won't wear my life preserver when crossing the lake.