Powermwt,
I guess "helpless" was a poor choice of words. Of course, being venomous, they can hurt livestock, children and the unwary. That's why I do keep them away from the house.
The point I was trying to convey was that they are very easy to avoid or get away from provided you are aware of them. The venomous snakes are a threat, of course, but a threat easily dealt with without having to shoot them. Here again, the key words are: provided you are aware of them.
Just watch where you step and never, ever put your hands where you can't see, especially when rock climbing. Most climbers are bitten in the hands or face.
Like yourself, I will occasionally take one for the table. I've never seen one as large as the one you described here in Arizona, but we did take a Western Diamondback a few years ago which yielded 5 lb of meat. I would have hated to have gotten nailed by that one. I doubt a shot load from a pistol would have stopped that one.
I agree with you on the rattling. You can't EVER expect them to rattle. Every snake I've seen, with one exception, has remained silent until I teased it a little. (I just can't resist agitating them a bit sometimes)
I've also seen a 2 footer with no rattles at all. Looked like they had been broken off.
One time I was shooting a small one in the yard with my K22, but forgot the bore was ¾ inch or so below the sight. With the snake facing me, each time I shot the slug would skin the tip of his nose. Boy did that rile him up! I skinned his nose 4 times before I thought to aim for the back of his head where the neck joined it. That one got him dead center.
Come to think of it, I haven't had a snake on the property since I got a cat. I wonder if there is a connection there? Anybody have an opinion on that?