He sacrificed his comfort for his daughter

Haha my dad would have asked if I recently fell on my head if I required that from him! Seriously, I think this type of sacrifices have a point only if the helping person loses less than what the other one gains, and whereas we can sleep in a lot of positions, this way to place his arm is bound to be tiring, as we are meant for our arms to lift stuff or hang there, but not stay like this.

Spoiled.

Dumbass could have asked the stewardess for a pillow....