Airplanes can be turned on by the flick of a switch.
Airplanes don't get mad if you 'touch and go.'
Airplanes don't object to a preflight inspection.
Airplanes come with manuals to explain their operation.
Airplanes have strict weight and balance limits.
Airplanes can be flown any time of the month.
Airplanes don't come with in-laws.
Airplanes don't care how many other airplanes you have flown before.
Airplanes and pilots both arrive at the same time.
