No meaning can be ascribed to meaningless killings like the ones in Pittsburgh last night.

Yet, the question still remains: "why".  Why would somebody do such a thing?  Revenge against a specific target?  A nut job?

The shooter (who took his own life) left behind an online diary of sorts.  We know why.  He was lonely.  Here is what he wrote on Monday:

"The biggest problem of all is not having relationships or friends, but not being able to achieve and acquire what I desire in those or many other areas.

"Everything stays the same regardless of the effert (sic) I put in. If I had control over my life then I would be happier. But for about the past 30 years, I have not.”

It's all there on his public website (mostly not available anymore).

[UPDATE:  Direct link to the "diary" here – looks like the guy with some racial issues and a little self-obsessed with his "isolation".  Apparently, he never learned (nor was told) that EVERYONE lives a life of quiet desparation, and that has nothing with being single or married, popular or unpopular etc.  Besides, life isn't about the achievement of some goal (social, career, or otherwise), it's about the journey.]

Which raises more "why" questions than it answers.

Screenshot from last "diary" entry:

I don't know the guy and I'm not a trained psychologist, but it seems to me that perhaps he was having bad luck with the women because there was something about him which suggested that he could someday be a mass killer.  Some people just have that vibe, you know?