Well there were a few other factors in founding this country and I refuse to get used to it.   
I'm not against gun ownership, just tougher laws on those who abuse it.  Admittedly though, the automatics have to go.   Or very hard for folks to get who haven't had police and/or military training plus a eval of their mental well being.    
People make comparisons to people who make bombs can kill masses but you can't go to the bomb shop and pick one up in 15 minutes.