I think maybe you come from an alternate universe. It’s been standard procedure for at least 3 decades to wear your seatbelt, even if loosely, all the time you’re on a plane, apart from when going to the loo or otherwise moving around.

I mean, I don’t really know how to say it without sounding like a git. This is simply what you do. What “everyone” does, for a loose definition of everyone. The “everyone” that wears seatbelts in a car, for example.

Genuine question: you know you should wear seatbelts if traveling in the rear seats of a car as well, yes ?