It's bit reductive to put it in terms of a binary choice between an average human driver and full AI driver. I'd argue it has to hit less pedestrians than a human driver with the full suite of driver assists currently available to be viable.
Self-driving is purely a convenience factor for personal vehicles and purely an economic factor for taxis and other commercial use. If a human driver assisted by all of the sensing and AI tools available is the safest option, that should be the de facto standard.