I think a lot of people are ignorant about potential consequences. I'm not sure why I say this, but I suspect that a lot of drivers would instantly assume that they are to blame and will therefore end up going to jail for manslaughter even if they have done nothing wrong. And, it probably happens a lot. Innocent drivers doing time for the negligence of pedestrians.
If there are no witnesses and somebody walks out into traffic from a blind spot at night time, leaving the driver less than a reasonable amount of time to stop or swerve, how do you determine whether or not the driver is partly to blame? Sure there are forensic tests they can do, but - in a court of law - who knows what's going to happen? Especially if you have priors for drink driving or running a couple of red lights or something.
The way the legal system is structured, it scares weak willed people into fleeing the scene. I wouldn't do it. I don't even drive. But I can comprehend the psychology leading up to a spur of the moment hit-and-run decision. People probably justify it to themselves by thinking the victim is already as good as dead; and there's no point ruining two lives.
People don't take driving seriously enough, as it is. It astonishes me how many people blatantly speed and do dangerous stunts - risking their own and everybody else's lives - in order to cut one minute from their travel time. As a lifelong pedestrian, I always assume that drivers are going to do the wrong thing; if I didn't, I would be dead already.
I don't think most people should be allowed to drive. There should be much harsher rules. If you've received more than two speeding fines, you shouldn't ever be allowed to get behind the wheel again. Something like that. I don't know. People just don't take the dangers seriously. Not to mention the damage to the environment.
Most of us can get by via public transport. It's difficult to justify owning and operating a car, these days, as far as I'm concerned. There appears to be no consideration, whatsoever, in terms of conserving fossil fuels.
It baffles me.