I grew up as a proud resident of New Hampshire which has no such law on the books despite being one of the safest states to drive in the USA.
Motorcycles are legal so why shouldn’t driving alone without a seatbelt? Perfect example of government overreach as cars get loaded with nanny state technology. I subscribe to the philosophy of personal responsibility, something that seems to have been lost in the modern litigious, it’s everyone-else’s-fault culture of the 21st century.