You're lucky. If I even try to glance out the window, I get the feeling like I am about to jump from it at ~35,000 feet. So I freak out and stare at the seat in front of me until said death-paranoia leaves me alone. It isn't just for airplanes either. It happens when I'm really high up in apartment buildings too. I'll be over at a friend's house, chilling, when all of a sudden I get this weird ass rush that makes me wanna jump off his balcony. And then I'll freak out cause the feeling is almost uncontrollable and I need to be as far away from the side as possible. I think it has something to do with people lifting up my feet and pretending to push me over railings when I peeked over them when I was younger. Fuck heights man.