I know anecdotes can't be used to "prove" anything, but please don't try to tell me that overall seat belts don't save lives or they are not needed because of airbags.
For those of us who have long been in the habit of wearing seat belts, it's just impossible to comprehend why
anyone would decide not to wear them.
I started when I installed seat belts myself in a new 1962 Austin Healy Sprite that came without seat belts.
I mentioned earlier in this thread that there is no doubt it saved my left on December 29, 1965, (almost a month before our first daughter was born).
Then on February 2, 1999, my wife lost control of our 1993 Ford Escort Station Wagon, and rolled it. I don't really know how many revolutions she made, but she cleared a barbed wire fence without touching or damaging it, and came to rest upside down in a briar patch in a pasture. She was pretty severely bruised, but no broken bones; almost certainly would have been killed without the seat belt.
When I taught our daughters to drive, I also told them I'd take their drivers license if I ever caught them without their seat belts on (before the days when it was illegal to fail to wear one).
I can understand someone thinking it feels odd to put that belt on, if you've not been accustomed to it, but it's not uncomfortable, and when you've worn one as long as we have, it just wouldn't feel natural or comfortable to move a car without having it on.