^ Bro 8, you will never get the answer you are looking for.... the "Why?"
I cannot comprehend it, even after training, experience, reading physco-babble, you name it.
I think the only ones that can truly comprehend it are those that have had suicidal thoughts. I have never even remotely for a second though about suicide, and it seems neither have you. I have thought about killing some other people, but never myself.
Seriously, take care of yourself. Talk to the wife and kids (as appropriate, if they know or heard about it), but I don't think you will find any answers that will make sense.
Gringo