I think this confuses cause and effect. Seatbelts are brought up so often precisely because they are an intervention with a huge benefit-to-cost ratio. Seatbel

I think this confuses cause and effect. Seatbelts are brought up so often precisely because they are an intervention with a huge benefit-to-cost ratio. Seatbelt laws were made long after the fact - seat belts for cars started to appear in the 1950s, with the common three-point variant in 1955; the first seatbelt law appeared in 1970 (in Australia). The US started introducing seatbelt laws for cars in the 1980s (though as far as I know, some organizations/insurers required them earlier for employees driving for business).