I ... at one level, can understand, why some people would find it "interesting", to try and find an explanation as to why, someone would ever consider performing a sick act like the one we have witnessed here, BUT my wish, and this is just my personal opinion, would be, that people would think about the victims of this horrible crime instead.
The ultimately best thing, in my opinion, would be to remove this sick bastard from the face of the earth, and forget about him. Never mention his name again, but mention the names of the 100 kids, who lost their life, to a poor devil, who had absolutely nothing to give, or show the world, to make himself stand out. Such a low life, that he had to do what he did, to be remembered by ANYONE.
That is truly a sad person, and a person who deserves nothing but death and to be forgotten. I know human brains don't work like that, but talking about this psykopath, and trying to find a deeper meaning in his actions, to me, is almost like gloryfying him, and giving him what he wants, and there IS no deeper meaning, or ANYTHING that the human brain can come up with that in ANY way, shape or form, can justify just a fraction of what he did. His sick brain was just unable to come up with anything better.
Give him a bullet in the brain, feed him to the sharks, and forget about him. That's all the rights he left himself, when he pulled the trigger the first time, and that is all the attention he deserves, and his like with him. The fact, that some sick bastard like him, will make it to the history books for what he did, makes me so sick to the stomack.
Let's forget him, and remember the poor kids, their parents, and everyone else who lost to a sick brain that day, because that is the only explanation to all of this, in my opinion...a very sick brain. Sorry, but it is of NO importance what this psyko did, what he owned, or anything else about him for that matter....he is not even a terrorist....he's nothing but a sick murderer, and nothing else about him matters any more. What DOES matter, is the poor kids, who were killed, the families and friends who where left with an unbelieveable pain, and the surviving kids, who will NEVER get over this, for the rest of their lives.
Just my 2 cents, as usual.