“Fact is, I had no reason to do it, and I just thought…(expletive deleted), life is boring so why not?”

That’s what the 1000 Oaks shooter posted on Instagram, when he paused in the midst of his stunning crime. The twenty-eight year old had already killed eleven people; he would go on to gun down a policeman and then take his own life.

We used to spend a good deal of time and energy wondering why someone would do something so terrible. We don’t do that much anymore, and that may be a sign that we’re actually getting used to this kind of random violence.