"there's one issue that we will all have to face: Economics "
True, and the economics are this: Who will pay to fly on this pilotless aircraft?
"Risk of human error entirely eliminated" - What about the humans who will design and build this aircraft? Or, what about the humans who will design the computers and robots that will design and build this pilotless aircraft?
"Sextuple redundancy systems with their respective back-up systems and circuitries." With all this, will there be any usable payload remaining?
I don't think I'll be buying any tickets to fly on anything like this. Who would?