Why?

It's what you are going to be hearing and reading for days after the horrific killings in Virginia.
The media is going to swamp you with talking heads analyzing Cho Seung-Hui's motives, past history and psychological makeup.
Since the man was a resident alien, you will hear about immigration. You will also hear how or what police should have or could have done differently on a campus some 2,600 acres. You'll also hear those who want to ban guns or increase gun ownership.
And in the end, all that noise will never answer the question of why a 23-year-old could have decided that murdering dozens was the right way to leave this world.