On Me and Guns

I don't have a gun, I don't have a desire to purchase one, and I'm not philosophically opposed to common sense gun control. But can we at least take a reasoned approach as to what we're talking 'bout here (this, I'm saying, to the partisan leftists)? a) Justice department data shows that nearly 80% of criminals purchase their weapons ILLEGALLY (a large chunk of which aren't even manufactured in this country) and that less than 1% (.7% to be precise) of them purchase their firearms at these (admittedly scary) gun shows. And 2) this Connecticut mother purchased the guns legally and also passed a background check. How, pray tell, would the things that people like Rachel Maddow are spitting and drooling over have prevented this crime when they were already in place (yes, Connecticut even has a assault weapons ban, for Christ - the weapon in question apparently didn't qualify)?.................................................................................................P.S. Yes, I realize that there are some other things that we could possibly look at. But none of these steps are necessarily clear-cut, either. For instance, yeah, we could limit the number of guns that a person could possess but a) that would penalize the 99.9% of gun collectors who are responsible and b) criminals aren't even going to go through the legal channels anyway....And then of course there are those who are advocating that the the gun-buyers' entire family should be screened prior to purchase. Again, it doesn't sound that unreasonable until you realize here that a) there would also be some huge confidentiality issues and b) people with mental illness aren't necessarily more likely to be violent PERIOD (Aspergers people are actually LESS likely to be violent to others). This whole construct that politicians (replete with their hubris) can significantly make a dent in this at least somewhat wishful thinking, I'm thinking.