I've worn my seat belt since I started driving. I feel naked without it and I feel as if I'm not secured to the car (technically I'm not).
When I was in high school I was a passenger in a friends car that got t-boned. I specifically remember the seat belt going taught a spit second before my head was about to go through the passenger window. The seat belt most likely saved my life once already. There's no reason to stop using it now.