One of the questions that is presenting itself in the debate regarding self defense and property defense is whether the Individual or the State is more capable of protecting either. We all know that the police aren't going to arrive on time, assuming you even have time to call the police, if your life is in danger. The State can't protect your life and the State probably isn't going to provide your family with justice either. The national average for unsolved murder cases is 65%. In some cities, it rises as high as 90%. With those kinds of odds and when you add in response time for police, it seems pretty clear that self-defense of one's life is completely the responsibility of the individual, no matter what the State says.
Now, much do you think this principle applies to property? I've had several things stolen from me in my life and not once have the police solved the crime. The average clearance rate for crimes in Honolulu is 91%. 95% of these crimes are property offenses. Chances are you are never getting your **** back and no one will EVER catch the criminal. The statistics are overwhelming. The State cannot protect your property. It's up to the individual. The State will also not be able to provide justice to the majority of those who break it's laws.
Taking that into account, you've got two men, possibly armed, and they are stealing your $30,000 truck. If they try to harm you, there is no one to call. If they steal your truck, that might cost you a years income and most likely you will never see the truck again and most likely the two are going to get away with it. If this individual doesn't stand up to these guys, no one will. More controversially, if the individual doesn't deal out justice himself, there most like will be no justice at all. It's just something to think about. We want the State to protect us and provide justice, but it clearly cannot.
That said, I don't think I would shoot someone for stealing my car, but who knows what the situation was. If I surprised two men in the process of stealing my car and I was armed and felt in danger, waiting might let them get the drop on me. Then I'd be dead and my family is probably never going get any justice.
Don't know if I would shoot a fleeing person though...but who knows again. Maybe he's armed and maybe he's going to run you down. There is an overwhelming chance that he's going to get away with your truck and not be caught though.
And he may be pissed at you for blowing away his buddy. Mercy in this case is going to come at the cost of some anxiety for sure.
The bottom line for me is that the STATE cannot provide you with protection or justice. YOU are responsible for protection...and justice...well to say it's rare is an understatement.