What really gets to me when these things happen is that some crazed S.O.B. couldn't just end his own life if he thought it wasn't worth living. He just had to go and kill innocent people that hadn't done anything to him. It's as if people like this believe that they're victims; that their lives failed because of a perception that everybody else was persecuting them and they thought this was their only way to fight back against it. It's really sad especially when many of these shooters give warning signs that are fairly obvious to people that know what to look for.