This shooter, the Vegas shooter, the Thornton WalMart shooter, ad infinitum, were not suffering from clinical mental illness of any sort. They're gun fondlers who stewed in their sad lives...convinced that they are the aggrieved defenders of the sacred 2nd Amendment and that guns are the answer to all of life's highs and lows. So, while the slaughter of innocent children, women and men continues unabated, ammosexuals like you keep up the fight for your peers - those a-holes with AR-15s - to keep plugging away. I'm sick of you, your like-minded greed heads in Congress sucking off of the NRA teet and your fellow gun fetishists who have made this country a killing zone. 
I grew up with guns and they were a strong part of my culture. But, to us, guns were tools, not objects of affection. You didn't need an AR-15 to hunt. You didn't need 50 guns to get through deer, duck and rabbit season. Guns were tools, not an answer or a cause.