I personally believe that these people that comit an act such as this are:

1) Suicidal (obviously)
2) Reaching out for attention
3) Want to be a martyr
4) Make a point of some sort

This person probably wouldn't have commited such an extreme act if others before him hadn't received such high profile news coverage and publicity. These people in a way become a part of history and get to be on TV. They get to exact their revenge, end their lives, make a public statement via recordings and suicide notes, and go down in history. A trend has been set, and as much as we try to prevent such a travesty, in the end efforts prove to be fruitless. Just like security forces in Iraq can't find a way to stop suicide bombers from blowing themselves up and killing dozens too hundreds of people, security at a campus has little power to stop a crazy from shooting up a school with automatic weapons. Definitely f'd up.

__________________
You have the look of a man who accepts what he sees because he is expecting to wake up. Ironically, that's not far from the truth.