Same here... my legs are in agony if they can't extend under the seat in front of me. 6 hours with my legs doubled up would probably be considered torture. Why not just give me an injection, knock me out, and stuff me in the cargo hold?
Because human bodies do not respond nearly as well to being treated like luggage as luggage does.
BASIC is to computer programming as QWERTY is to typing. -- Seymour Papert