Putting on a seatbelt is such a habit for me that, I’ve actually buckled up when I’ve gone out to the car just to get something. (Something which is easier to get if I actually get in and sit down, that is.)
I do have one story to relate where a guy likely avoided serious injuries or death because he was not buckled in. This guy was driving his 4x4 truck early in the morning one day. There had been showers during the night, and the roads were nice and wet. He hydroplaned, jumped a ditch and ended up flipping the truck end over end repeatedly in a field.
Now, like me, this guy made it a habit of putting his seatbelt on. But, for some reason, he hadn’t done so this time around. When the truck started flipping through the air, he basically laid himself out across the seats, from the driver’s side to the passenger’s side. (I’m not sure if he had grabbed the passenger’s side door handle. He may have.)
When the truck came to a stop - upside down - he crawled out and, once he got his bearings, quickly ran away from the truck when he saw what he thought was smoke coming from it. It turned out just to be steam, since it was raining, but distancing yourself from a potential fire/explosion-hazard is always good.
When they turned the truck over, they saw that the driver’s side roof had been crushed down right to top of hood. If he had been wearing a seatbelt without a shoulder strap, he could have probably laid out across the seats like he had. But with the shoulder strap, he would likely have suffered severe head and/or neck injuries, or worse.
Now, I’m definitely not saying someone should rationalize not wearing a seatbelt due to the possibility of a scenario like I just related. There’s always the good possibility of being thrown from a vehicle and then being crushed by the vehicle as it rolls. Now that I think about it, the guy in my story may not have been thrown from the truck for the simple fact that he’s a very large man, and couldn’t easily get out the window, much less be thrown out the window.
(The truck was a write-off. The frame had actually been bent, making any other repairs moot. However, the guy found a new frame, and rebuilt the entire truck essentially by himself. It was quite impressive.)
Anyhoo…