Can't see unmanned craft flying passengers around in my generation. The public's perception of computers is what they see at home. That isn't very reliable is it? So it will be a long time before people will happily get into an aircraft that has no humans up the front.
I believe that craft that visited Australia had crew in it. "Just in case"...
What statistics don't sure is how often humans, whether they be aircraft engineers, ATCO's or pilots actually save the day. Reason why there's not as many stats compared to human failure is because there hasn't been an accident/incident.
I am sure it will happen. Just not for a loooooooong time.