That's the rub though, Brady laws are ineffective. If you want a weapon for a crime you are going to get one and the likely fact is you will attain one illegally.
SAF Press Release :: BRADY LAW PROVEN INEFFECTIVE ONCE AGAIN
A criminal ? Yes. I was talking about the so called crimes of passion. You know husband gets mad and runs down to buy a gun to shoot his wife. Man has to wait 9 days, that's 9 days for him to think " that's a dumb idea" . If one life is saved, I'll wait 9 days. Not that I personally have to, but I would.
The kind of guy who would think gun as a way to deal with hurt or anger, however, is most likely the kind of guy who knows how to get a gun on the street any time he wants one. Using a gun to deal with hurt or anger would not occur to me, nor have I ever been in the crime/drug culture, but even I would have no trouble obtaining a weapon any time I wanted one.
I prefer to do it honestly, legally, and without concern of what a 'street' gun has been implicated in, however. And if I felt the need to purchase a gun in a hurry, it would be because I feared for my life, safety, or that of loved ones. And I wouldn't want to have to wait nine days to get one.
Using your logic, if waiving the waiting period or implementing a quick on line instant background check would save a single life, it would be worth it.
Note, I am NOT saying that no background check should be done. I am NOT saying that anybody should be able to purchase a firearm without providing positive ID and waiting for a quick background check to make sure he or she isn't an illegal, isn't on parole, isn't wanted, isn't an escaped mental patient, or whatever. But with today's technology there is no reason the 'no authorized gun' crowd can't be placed into a single, easily accessible base for law enforcement personnel and gun dealers similar to the 'no fly' list or cancelled credit cards--a data base that can be accessed from the counter while the customer waits.
The nine day waiting period is far more political ideological nonsense than practical.