Humans have something called common sense, which overrides some perceptions. Common sense is right enough times that it is essential to the human organism. Yes, it’s wrong sometimes. There is no way to program common sense into a computer. None.
Plus, the human mind has the ability, which it doesn’t always use, to monitor its functioning in real time, and to take measures to get itself back on track. I’d like to see someone try to program that into a computer.
Flip side: computers are relentlessly focused, while humans get distracted/bored/sleepy. On a long-haul trip I’d rather let the computer handle normal-condition driving.
Statistics on both are being gathered & compared. Comes down to: if absolute unrestricted “per person per mile” death rate of human driver is > 10x that of self-driving computer, the latter should usually be operating ... and apparently we’re pretty much at that point already. Yes there will be special-case differences, and it behooves the humans to learn what those situations tend to be (bad weather, city, obvious oddities) and take over accordingly - making the whole system much safer.