I wanted to preface everything with this:
As much as I may have been "against" your actions, I do hope that your car gets fixed in a way that you approve of.
With that said...
It's being human. People are emotional; some more so than others. Wouldn't you "rage" if something bad happened to something you truly care about, even if the rage is completely irrational?
I definitely agree that humans are emotional and to varying degrees. But I think I see where the difference is really coming in -- the phrase "to something you truly care about". This isn't to say that I don't care about my possessions, but I would care far more about the
people involved in an accident versus the machinery. I can always replace machines, I cannot replace people.
e.g. If someone accidentally spilled a drink on my laptop and fried it, I would be raging.
Accidentally? No, I wouldn't rage over it. I'd probably be visibly annoyed/unhappy, but it's that key word that changes things for me: "accidentally." If someone purposely tried to ruin my laptop, I would definitely be more angry about it. But in that case, the #1 thing to do is to figure out how to resolve the situation.
Shit happens, Mermaidman. It's how we deal with it that signifies who we are.
I respect other people's property and expect the same in return.
I don't blame you for this in the least, and I'd say that I'm the same way (and beyond just property as well).
I also expect people to be responsible, but APPARENTLY that is too much to ask. AGAIN, the RESPONSIBLE thing would have been to realize you were losing control and just give up your license. And if you were too far gone to make that decision, your family should have done that for you.
I wonder if you might be assuming that there were issues that were noticeable to the person or his family. You even said that he was practically catatonic at the scene, so I wonder what he's even able to perceive in such a situation. He might have just been lucky in the past and never got into a bad situation, so his family could never rectify it (or perhaps he doesn't have anyone).
In a way, maybe you can look at it as your bad situation will make it so the guy's inability to drive doesn't potentially cause an even worse accident involving serious injury or fatalities.