I quite literally wouldn't be here if I had been paying attention, driving with two hands on ten and two and the road I was on had been smooth and not had a divot. That doesn't mean I advocate zoned out driving, poor road upkeep or driving one handed.
When I was at FSU in undergrad I was driving down 19 very late at night maybe 3 or 4 AM. It was about an hour and a half into the drive and there's no one else really on the road so I'm kind of zoned out just chilling in the fast lane leaning back one hand on the top of the steering wheel where it's not supposed to be. Then Bump, I hit a large divot in the road which causes my hand to jerk slightly to the right getting my car moving towards the right hand lane. It's only at that point that my lights manage to light up the reflector of a car speeding directly at me head on. It's a drunk with his lights completely off and thinking he's on the other part of the divided highway probably doing 100 mph while I'm doing my casual speeding of about 80 mph. I have just enough time to get the car completely out of his way BECAUSE I was already halfway over because of the bump and my hand jerking the wheel to start. Even still his front bumper managed to scrape a little bit of paint off the side of my front bumper. If I'd been hit head on with a combined speed of 180 mph there was no way I would have survived and even if he'd just clipped me and I rolled at 80 mph I probably wouldn't have survived at least intact. If I'd been paying attention I would have straddled the divot placing me even closer to him, and if I'd had two hands on the wheel the bump wouldn't have started the car turning to the other lane.
So the Moral of my story is I'm a lucky SOB who should be dead. NOT that I should start driving zoned out and one handed on a regular basis. Similarly you were ridiculously lucky and no one should pass up the safety of a seatbelt. For every one SOB like yourself saved because somehow they were moved and not broken during an accident there's 100 broken and twitching their final death dance on the road.