I think the reason I've been hypervigilant about safe driving practices is that my father owned a rigging company, and I was driving forklifts and stake trucks in the yard from about 13. I understood the impact a vehicle could have on other things, people included. Living in that world from about age nine on teaches you to be obsessive about properly securing a load (Molding machines, air handling units, lathes, etc.).
I've often thought people would be better drivers if they started their driving experience with the motorcycle safety training course curriculum and drove for a year on motorized two wheels, taking up the lane and keeping up with traffic.