I can fall asleep almost anywhere. I routinely fall asleep in the break room at work. Once, I was helping a friend fix his car, and I fell asleep on his garage floor when he went inside to get water.
But in a hot metal tube tearing through the sky, with my neck all kinked? Get out of here, man.
You can't do that anymore :/ half the seats aren't aligned to window properly, and the other half the window is so far away from the window seat that you can't lean against it.