Haven't seen the show and am not interested.
But the issue is real. Are $$$ spent on prepping "wasted" and, who decides?
I think of "prepping" like insurance. We insure against our home burning down. Unlikely, but still very possible. (Years ago, a home near us did burn down.) Is the money wasted because we (so far) have not needed it? I don't think so.
So, IMO, its an individual (or family) decision to look at the risks and how much time, money and effort they want to spend to "insure" against the worst, whatever they think that may be. Let individuals and families decide for themselves.
Personally, we expect to sleep through 12/21/12 and enjoy the day. life, with all its problems, will go on. I also don't expect or prepare for a comet/meteor/nuclear event on or near my home. Fires, floods, power outages, riots, yes. TEOWAKI, no. YMMV.
You have to look at the odds. The USA powerball lottery is now up to 550 million. Odds of winning, 1 in 175,223,510. Sales are booming. Odds of being killed by lightning, 1 in 79,842, odds of being killed rushing across the street, 1 in 701. See:
http://usnews.nbcnews.com/_news/2012/11/...ll-jackpot?liteSo we aren't making retirement plans on winning. I think a TEOWAKI event is far less likly then our winning the Powerball.
It's their $$ to spend, so they are welcome to do as they please. Heck, we even bought some powerball tickets.