Of those 12,000 deaths and 22,900 injuries how many of those were a direct result of *illegal gun ownership and things like gang activity, drug activity, etc? I'd bet the kind of people who would kill or rob you regardless of what their weapon of choice may be are those responsible for the majority of those deaths/injuries. But it's almost impossible to put numbers to this kind of thing as most aren't exactly itching to confess to multiple felonies. Not to mention that people have been killing people since the dawn of time, long before the invention of guns or even gunpowder (thank you China). So just because they have adapted to use the tools of the time does not make a gun inherently "bad" or alter the human brain when they pick up a gun and all of a sudden decide to rob, maim, or kill someone.
As for my logic, I hope I never have to draw my firearm and shoot a fellow human being...but if it means I live and the world has to deal with one less bad guy, I have no problem with that.
Guns are tools, just like a vehicle or any other piece of heavy machinery...can they be dangerous in the wrong hands? absolutely...but they serve very valuable purposes. I know it's become a cliche argument in the gun debate but look at the extremely high number of deaths directly related to driving/being in or around a vehicle...is there a movement to ban all motor vehicles and bring back the horse and buggy? No, you go after the person operating the piece of heavy machinery not the (inanimate) machinery itself. Cars don't cause accidents, poor driving does.
And for the record the gun debate is pointless....gun ownership is a right engrained in the bill of rights and will never be stripped without a hell of a fight. If you really believe that honest, law abiding, gun owning Americans will just hand over their guns without blood being spilled...you are wrong. In case you forgot that's how the American Revolution was really sparked to beyond a breaking point...the Brits came to seize the arms cache in Concord, and we did not take kindly to that then either.