It straps you to the seat so when the plane suddenly drops 50 feet due to turbulence your dumbass doesn’t launch into the ceiling.

I have observed that “very clever” people on the internet have a tendency to disregard solutions that are only partial, even if there is little to no downside to them.

“Oh yeah? Why should I be wearing a seatbelt in a car when it won’t even save me if we crash head-on into a semi truck at 100 kph?”