But making guns illegal isn't going to stop that kind of thing.
The problem with making guns illegal has always been that the guy who wants to rob the 7/11 will manage to get one anyway.
No, you're wrong. The impulse robber would be totally prevented from robbing the store by gun control. Only the very serious, motivated, and well connected criminal could find a gun and afford to buy it in a gun-control society. So, yes, maybe a very small percentage of the convenience store robbers would still get guns, but it would deter most.
Also, keep in mind that convenience store robberies are a very small percentage of murders/attempted murders. Lots of killings are, as one would expect, 'loved ones' killing loved ones. These are the sort of people that if guns were not allowed might have a more difficult time accessing them (because they're ordinary people and not well connected to or comfortable in a criminal underworld). Thus the impulsive shooting of loved ones would be reduced.
Of course the flaw in this is that in most of the rather nonsensical gun control advocated in the US, 'responsible citizens' can still get a gun through licensure procedures, etc. The only effective gun control would be an outright ban, since the main benefit is to prevent otherwise 'law abiding' people from getting them, not criminals.
