My mother's father was a Chicago Fireman from the forties through the sixties. Some things he saw made him an absolute zealot on the subject of seat belts. All his kids wore them, and all his grandchildren were pretty much indoctrinated from birth to wear them.

He was also fanatically opposed to real Christmas trees, insisting that it would be safer to soak the couch in gasoline and hope for the best. Remember those white aluminum trees? That's what we had.