Just to show how everything has an equal and opposite ...
Flying long haul isn't the most enjoyable experience in the world, and getting a few hours kip is the best way of getting through it
Flying long haul
is the most enjoyable experience in the world, and
I always feel cheated if my body takes a few hours kip. Last Friday, I was on the daylight from JFK to LHR and wanted to enjoy the day but had had a very busy few days and did snooze for about two hours - most irritating!