You were making a lot of sense up until here. Then you just lost the thread. The key difference is NOT storage of firearms. That's a fairly minor issue. It implies that a significant fraction of murders are committed by otherwise normal people who just happened to have a gun next to them for that fleeting moment when passion ruled them. But that simply isn't the case. Murderers are not normal people. They are overwhelmingly people who already have a criminal record. There is no reason to think that the way that they stored their gun would really prevent them from using it in a crime, or even that they would follow the law regarding storage. And with the exception of domestic violence cases (which storage laws won't stop), I've never seen any evidence that guns being used against their owners by third parties is really a significant contributor to the problem.
I think you are making a number of pretty significant false assumptions here. There's a number of factors with relation to homicide and guns that points to lower levels of gun violence with greater gun controls. I say homicide for a reason, and your immediate leap to "murder" is telling.
Firstly, there's suicide, which represents the largest single cause of gun-related homicide. Comprehensive psychological analysis of suicide has found that the overwhelming majority of suicide attempts are not-preplanned, but rather spur of the moment acts. Further, in most cases the primary purpose is not to end the person's life, but rather to make some sort of statement to other people in the person's life. Suicide is most often, literally, a "cry for help". A readily accessible pistol offers one of the easiest and quickest ways of carrying out a successful suicide. This is further compounded by the number of people who do not commit suicide with their own firearm, but with someone else's firearm which is readily available in their house.
The next problem, as you move onto murder, is that the presence of a gun in a situation increases the odds of a death occurring. The USA's non-firearm homicide rate is comparable with the non-firearm homicide rate of other western countries. Meanwhile, the rate of firearms use in crimes in the USA is substantially higher. If a firearm is used in
any crime, the likelihood of someone being killed is dramatically higher.
Indeed, when we look at the specific circumstances of gun murder in the US, nearly half of all homicides occur in the spur of the moment, in the immediate aftermath of, or during, an argument or fight. It is the ready access to firearms that escalates a non-fatal confrontation into a fatal confrontation. There is no cooling off period - the killing occurs on impulse. Thus a firearm that is less accessible is less likely to be used to kill.
The second most common circumstance for gun murder in the US is during the commission of a felony. It is notable that use of firearms in crimes is much higher in the US than in other western countries.
In both of these circumstances (which combined constitute 75% of male gun murder and 65% of female gun murder) the storage of firearms is directly pertinent as they only occur due to the ready access of firearms.
The real key difference is simply that the general crime rate in New Zealand and Scandinavia are much lower.
Is it? I think you might be surprised at the rates of violent crime in New Zealand. The difference is people don't die, because guns aren't involved. Of course, it's a little difficult to compare crime statistics because of differences in how they're measured, but I think you're being a little naive by declaring it's just because of generally lower crime rates.
And that probably has lots of causes (less cultural homogeneity leading to fractured communities, larger numbers of poor immigrants, our failed drug war...).
Again, it doesn't reflect the reality. New Zealand is significantly more culturally diverse than the USA, and significantly poorer.
Because we think that citizens should be able to defend themselves without having to depend upon the state. This isn't simply a question of how effective personal defense is versus state protection, it's also a matter of principle. Do you surrender the ability to protect yourself to the state in the hope that the state will do a better job? How much personal responsibility are you willing to cede to the state? What will you let them keep you from doing? Your answers and my answers need not be the same. This idea that America has to come to the same conclusion as most other developed countries is rather peculiar. I would think one could see that having a variety approaches to the structure of society would provide benefits. It doesn't upset me that the rest of the world doesn't adopt the American model, why should it upset you that America doesn't adopt a European (for want of a better term) model?
I think you've missed the point totally. I get the desire to be protected, and not to have to rely on the state. That's not the issue. Do you really think I feel safe because there's a policeman around every corner who will come to my rescue?
Like I said, the issue is really one of perceived threat. It's not that I am happy to leave my protection to my government. It's that I don't feel like I need protecting, because I don't feel threatened.
That's the difference. Americans feel threatened. The rest of us don't. The question is why? Crime statistics just don't support the contention that America is that much more dangerous.