Still, I thank goodness whenever I park my car that nothing bad happened. (I mentally kiss the ground.)
Opportunities for hitting a pedestrian even while a driver is sober and fully alert, are scarily numerous, especially when driving in heavily populated towns and cities (though dark highways in the middle of nowhere can be especially dangerous in this regard, as we wouldn't expect anyone to wander on to an unlit roadway in the middle of nowhere--but it happens).
I don't know how many times I have asked myself how I might stop in time were some fool to suddenly step in the path of my vehicle from between parked cars, only feet from my approaching bumper on some dark night.
Driving a car safely is nearly impossible--I've often been in situations where by the time you've made sure an intersection is clear of pedestrians and traffic from one direction, enough time has elapsed that it might not be safe from the other direction you checked a moment ago.
To go about in a car with true care, you would need to proceed so slowly that you'd be rear-ended (no coincidence that has been almost exclusively the only kind of accident I've had--now I always check my rearview before slowing, time permitting. I digress).
Nothing comes without risk. I would say that the two largest causes of car accidents are "failure to control speed" and "failure to yield right of way". Driver distraction will also factor in but many accidents are so avoidable. I've had my car hit by a bicyclist who wasn't paying attention to what he was doing (or he was drunk, or both); he came from 2 lanes over (at the right) and sideswiped my car (which was ahead of him in traffic).
We have to share the road regardless of whether we are in a car, a bicycle, or on foot. If a road has a posted speed limit of 30MPH but you are aware that it is a residential area (and don't have good vision of crosstraffic) then you should be driving slower.
Some teenage pedestrians play chicken with the cars, running out into traffic to cross (to see if their friends will follow) and to show that they can make the cars stop.
If they get hit, it's their own fool fault.
Airplanes seldom crash but they pose an immense threat if they fall out of the sky over a populated area. They haven't been banned. The slim risk is outweighed by the benefits.
Trains wreck too.