The people in here claiming they are absolutely above making such mistakes, that good parents are above such mistakes, are the same sort of people who say “[X evil thing] could never happen here” or “[X bad person] is an inhuman monster, completely different than the rest of us.” Good people wouldn’t do X, and they are good people, so of course they wouldn’t do X. (And then, of course, when and if they do X, it’s not the same thing, not at all.)
If good parents never leave their children, then so long as you’re a good parent, you’re covered. You’re not at risk. Because by definition good parents don’t leave their children in the car.
Bad, mean, horrible, negligent parents who don’t care leave their kids in the car to die and roast. I’m not a bad, mean, horrible, negligent parent, so I won’t leave my kid in the car to die and roast. How do we know these are bad, mean, horrible, negligent parents? Because they left their kids in the car to die and roast.
What if they thought they were good parents? What if they thought it would never happen to them? Well, they were never good parents. They were always wrong. We know this because they left their kids in the car to die and roast.
Bad things happen to other people because they deserve it. Good things happen to me because I deserve it. I am a better person than they are, so I will get better results. We know I’m a better person because I’ve gotten better results.
And because this can’t happen to me, I have no need for sympathy or empathy for these parents. Because they are terrible, stupid people, unlike me. They are terrible parents, unlike me. They are prone to error, unlike me. They are nothing like me. I am completely different. It could never happen to me. Nothing like that could happen to me.