Other than the ignorant mullarky on meds and depression, I think we all have touched on some valid driving principles.
I am looking at the scope of this from the back end, and in many ways, I'm glad.
For example, you often hear about folks dreaming of winning the lottery. At first blush it seems that they desire fancy cars, European vacations, and luxury homes. My belief is that they want freedom from this game.
If I was independently rich, my focus would be on the "independent" idea, not the "rich." I'd probably never carry a wad of money.
Being "dependent" on things, like a job, a mortgage, the cost of raising a child, etc. means that your time--if only to take a nap--is governed by things you cannot choose. I also believe that this trap is cumulative. You torture a person with hopelessness for long enough and folks snap.
I spend a lot of time with older bikers. If you read between the lines you hear the same story over and over. It runs like this...
"Boy, I tell you what, Willard, if I ever get out of that dead end job, I'm going to build a Road King for me and the Missus, and go get lost on the highway. None of the chatter of those stinkin' kids and *&%$$ cell phone tied to my ddick. I am out of here..."
Not once do they mention stocks or bonds or gold bars. They want out.
We simply describe that process in terms of money or time. I must admit I've described it to the TFL members in just those terms. We debated Social Security funds, retirement, customization of my bike, my wife's declining participation at work and those long naps.
It's all the same. I have escaped.
The people involved in the shootings are lashing out. My guess is that their internal anger has been fomenting sliently for quite some time, even decades. Consider the Michael Douglas movie "Falling Down." My belief is that at it's core, these people feel hopelessly trapped.