I is one!
An age old question like why are we here?, how big is the universe? etc...etc....
Why on earth would anyone want to be an accountant? or dig holes in the road? it's because you just do, it's one of those strange things that grab you and tell you that you are destined to do nothing else.
All the stress, the bad pay, the periods of unemployment, the endless trips away from home at a moments notice when you've just invited guests round for dinner that night.....and then you get in the cockpit, start your engine(s) and lift off (I'm a helicopter pilot just in case you were wondering) and everything is forgotten and you just love it.
Simple
The worst thing you could ever do, is want to, not try for it and sit there in 25-35 years time and say "god I wish I'd tried for it".
Rick