I pretty much don't listen to those shows or read those kinds of reports--I agree with the other poster(s) that there will always be dooms-sayers.
I also agree with other posters about living within or below your means (and living debt free, or at least as much as possible). I do not believe in guns (if we had to hunt for our meat, I would, but it just scares me way to much to have a gun in the house, with a 2yo around). I do believe in self-sufficiency, with reason. We live in the city, and so cannot go "off grid" but I believe in trying to learn about things and doing for yourself, such as growing a small garden, learning to can, making soap from scratch, how to make bread from scratch (well, with store bought yeast & flour though). We subscribe to Countryside magazine (and there are plenty of doom-sayers who write in to the letters column, there, too), but it has tons of interesting articles on self-sufficiency.
We do not stockpile food in the sense of trying to keep a certain amount on hand, but probably have 2 or 3 month's worth of food in the pantry & freezer by taking advantage of sales; this is more a result of trying to be frugal than trying to stockpile.
I have always been interested in "old timey" ways and in doing things for oneself. But I do not listen to any of the rhetoric, on either side. Listening to that is bound to make one a little paranoid at the very least.