Irrational fears about pilotless planes must eventually give way to the evidence that they are better and safer.
But there are
rational fears about in-flight snafus: Hydraulic leak affecting flight controls/gears & gear doors; electrical anomalies affecting navigation/gyros/fuel pumps/valves/autopilots/auto-throttles; smoke in cabin; bird strike; uncontained engine failure/separation; air conditioning/pressurization failure . . .