Airplane seatbelts aren't for crashes, they're for turbulance. When the plane suddenly drops 20 ft, you want to be attached to it otherwise you're gonna slam into the ceiling and land on someone else.

yeah, the "wear your seatbelt" thing isn't for when you nosedive to your death. It's for when you're sitting there eating your shitty snack and the plane hits unexpected turbulence and drops 700 ft in 2 seconds while your face doesn't until it gets hit with the ceiling of an airplane.