Why does Survival Food make ppl go WACKO?

No problem. Of course that seems to be the general portrayal of survival food. For all I know it tastes lovely and drives people to wackohood so they can get as much as possible. But somehow I doubt it.

The easiest way to understand how a sane person can go wacko is by doing this.

Step 1: Buy heavy blackout sheets for all the windows in your house, making sure as little light as possible can get in. After a while this stops your body from being sure of when it's night or day and screws up your sleeping cycle. Placing thick mattresses in front of the windows will also work as well as cutting off a large amount of sound from the outside world.
Step 2: Cut all electricity, heating and running water except that which is battery powered. During a survival situation such as an earthquake, electric power is a luxary that you won't have. It also makes your option of supplies more limited if you have decent food that needs to be kept cool. It also cuts the chance of most modern ways of entertainment. TV, DVDs, CDs, computer games, internet. All out the window. All electronic entertainmeant is battery powered. Heating most be provided by clothes or blankets. Water is easiest if bottled. Kiss baths and showers goodbye.
Step 3: Stock up on books. Depending on how quick you want to test going insane, stock up on books that you haven't read in order to keep you entertained longer. If you want to see how quickly you go wacko, stock up on books that you have read. Or the book of how great George Bush is. Will drive anyone round the twist in days, if not hours.
Step 4: Cut off all human contact. Force your mind to think it is totally alone and without a single friend in the world. Your mind either starts to plundge off the deep end or tap into deep reserves of extreme self-reliance.
Step 5: If you really want to simulate a personal disaster in your own home... Grab a sledgehammer, a huge bag of dirt, rocks and rusty metal (sheet metal works best for sheer space and ease of being carried), matches and a fire extinguisher. Use the sledgehammer to smash in the following. Your fridge, your TV, any electronic equipment that isn't portable (flashlight, walkman, Ipod), all of your lights, mirrors, glasses etc, etc. Take the bag of dirt, rocks and metal and toss it around the remains of what was once your nicely furnished home and set a few fires with your matches. In the remains of your TV set is a classic disaster movie image. Then throw yourself around the room until you are good and bruised. Lay yourself on the floor a small distance away from the fire extinguisher. The rest is pretty much straight forward from there on. Try and survive as long as possible.

Strangely enough, two of the best guides to help you survive in such situations are the book and movie versions of 'I Am Legend' if you take out the parts about viruses and zombies/vampires and the 'Zombie Survival Guide' by Max Brooks, particularly Chapter 3: On The Defense and likewise, remove the parts about zombies.

Anyways here's my extra guide on the subject. Have fun.