I can remember driving my car in the '70's without a seat belt, before seat belt laws were commonplace. Once the seat belt laws were in place, I bitched about not having the "freedom" to move around while behind the wheel.
Now that I wear a seat belt ATT, it feels strange not to wear one when driving.
I wear Motoport mesh ATGATT, and would prolly feel uncomfortable without it.
I did the shorts, sandals, and T-shirts on my dirt bike in the '60's. Had not been aware of ATTGATT back then, nor could I have afforded the gear!