However, you make an excellent case for unmanned commercial aircraft.
I know you may be jesting here, but we don't want unmanned commercial aircraft. What we want as I have said over and over is autos that are fail safe (like stuctures etc) so that the crew - which we must have to operate the aircraft - do not have to steer the aircraft.
All the pilots I know (including me) have from time to time made a bad job of steering an aircraft. Autos don't have those sort of bad days. However the idea of autos operating the aircraft - that is making all the decisions about a flight is plain silly.