Only the rich old fogies can afford to fly. You ground all the suspect pilots, and the industry would collapse.
Fortunately, the amount of damage you can do with a light plane or LSA plane is pretty minimal, and no more than you can do with a truck, for example. And the hobby does tend to Darwin out the incompetents, usually in a blank mountain range or open field. Ground casualties are more the exception than the rule, though they tend to get the publicity. Flying is not kind to the stupid or careless.
Locally, with virtually no limits on how old you can drive, we see plenty of 'unintended acceleration' and 'loss of control' accidents with elderly drivers, although they are more than balanced by the young careless, distracted, under-the-influence drivers.
Was keeping track the other day as I traveled on the Interstate, and there was rarely a sixty-second period when I didn't see a case of really bad driving, wandering between lanes, excessive speed, un-signalled lane changes, tailgating, crossing multiple lanes to exit, passing on the right, failure to yield, etc. And the vast majority were young drivers.
One well-publicized 'accident' recently on a city street had a young driver turning right from TWO lanes to the left into a mall, while a wildly speeding young driver in the right hand lane failed to avoid him, causing the collision. The speeding driver failed to brake after the collision, traveling a couple hundred feet additional into oncoming traffic, fortunately without incident. Both drivers claimed that a recently decommissioned stop light at the intersection was to blame, though both were traveling in the same direction and would have been unaffected.
We really, really need to see stepped-up traffic enforcement, or the bodies are going to start piling up.
If any of you have the misfortune to be traveling through, understand that drivers here SUCK. And act accordingly.