I don’t like any of it. I have several phobias that are compounded by flying: fear of heights, fear of dropping/falling, fear of not being able to get to the bathroom on time.
On top of that, I don’t like being in cramped spaces, and I don’t like having to bother people to get up or move around, or simply to get out of the seat or aisle.
I can’t bear to listen to screaming children.
Everything takes too long, from standing in line to board, to simply getting on the plane and stowing luggage, to getting off the plane, to waiting for baggage at the carousel.
I don’t like to do my business in tiny, cramped bathrooms, especially when there is pressure do to a line of other people waiting to use the bathroom.
Airplanes are notorious places to pick up germs.
Air travel is very expensive.
I don’t like the idea of being trapped, and not in control. At least on a bus, or a train, if you make a fuss they will let you get off. You can’t do that on a plane. Yes, they can arrest you at the end of the flight, but you still can’t get off immediately.
Jet lag ruins a whole day.
Other than that, it’s great.