I'm with kcockayne.
T've seen this 'computers and technology will solve everything' malarky at close quarters, there are some crazy ideas out there.
You have to provide folks with gainful employment, otherwise they can't afford to be tourists and travel on these marvellous 'it's the future folks' pilotless aircraft.
Doubtless one day, they will sell seats on a pilotless airliner, but they won't sell one to me.