So you admit it's the people not the guns that's the problem? Wouldn't it then make sense to go after the people, such as those with mental health issues and/or with terrorist links rather than the inanimate objects such as guns, airplanes, fertilizers and the like that they use to perpetrate their terrible crimes? Oh right, it's only guns that matter.
Well, first, in the wake of Oklahoma City it did become quite a bit more difficult to obtain large quantities of ammonium nitrate. In the wake of 9-11 and the various shoe- and underwear-bomb attempts it has become very much more onerous to fly due to massively increase security. What's really interesting is that in the wake of Sandy Hook and Columbine and all the other mass shootings in the US in the last number of decades it doesn't seem to have gotten any more difficult for people to obtain these WMDs (indeed, it seems to have gotten easier and easier.) Oh right, guns aren't the problem...
So where do you draw the line? If "inanimate objects" are not the problem then why do we put restrictions on anything? If a peek inside your Muslim neighbor's garage showed revealed crates of sarin and VX...no problem, right? If the white redneck on the other side of you was stockpiling bags of ammonium nitrate and barrels of fuel oil...no problem, right? After all, these are just inanimate objects, right?
Do you support the world restricting the proliferation of, say, nuclear weapons? Are you okay with North Korea obtaining fusion weapons and the ability to deliver them to Manhattan?
There must be something; you must have a line in the proverbial sand: What is it and why?
PS, would holding the door closed to keep victims inside an establishment such as a night club while a terrorist is killing people with great rapidity increase or decrease the total death rate?
Why are you even asking this?