Hang gliders can kill you quickly; a woman takes her time.
Hang gliders don't get mad if you 'touch and go.'
Hang gliders don't object to a preflight inspection.
Hang gliders come with manuals to explain their operation.
Hang gliders have strict weight and balance limits.
Hang gliders can be flown any time of the month.
Hang gliders don't come with in-laws.
Hang gliders don't care about how many other Hang gliders you have flown before.
Hang gliders and pilots both arrive at the same time.
Hang gliders don't mind if you like to look at other Hang gliders.
Hang gliders don't mind if you buy Hang gliders magazines.
Hang gliders don't mind to be tied down.
Hang gliders don't comment on your piloting skills.
Hang gliders don't whine unless something is really, really wrong.

However, when Hang gliders go quiet, just like women, it's a bad thing.