For global catastrophic risks the costs of food storage become impractical for most of the population  and for some such catastrophes conventional agriculture would not function due to the loss of a large fraction of sunlight (e.g. during nuclear winter or a supervolcano). In such situations, alternative food is necessary, which is converting natural gas and wood fiber to human edible food.
However, a few unintentional similarities to the Quiverfull movement doesn't mean that preppers can't still care about safe sex. Hunting, canning, and digging your own latrines does nothing to make the threat of an STD less real. After all, gonorrhea and genital warts are going to be a whole lot harder to treat without reliable access to medical care. And there must be at least a few survivalists out there rational enough not to want to endure the horrors of premodern pregnancy and birth unless absolutely necessary.
The increased inflation rate in the 1960s, the US monetary devaluation, the continued concern over a possible nuclear exchange between the US and the Soviet Union, and perceived increasing vulnerability of urban centers to supply shortages and other systems failures caused a number of primarily conservative and libertarian thinkers to promote individual preparations. Harry Browne began offering seminars on how to survive a monetary collapse in 1967, with Don Stephens (an architect) providing input on how to build and equip a remote survival retreat. He gave a copy of his original Retreater's Bibliography to each seminar participant.
A: When organizing materials in a tactical backpack there are certain fundamental rules to follow such as packing the sleeping bag at the bottom and placing most of your heaviest items in the center of the bag, with clothing like thermal tops and hiking pants etc above that. If you’re carrying a tent it should be lashed to the side of the pack. Survival gear – like most of the items reviewed above – is often small and light and should be distributed in the exterior pockets of the backpack where it can be easily accessed in an emergency. Place items related to the same task in separate pockets; i.e. place all your fire starting related items in the same ziplock bag and put them in one pocket then put your navigational aids together in another pocket. Things like emergency blankets and Mylar survival tents can go together in another pocket. While your tomahawk should be tucked away in the backpack, your knife should always be carried on your person. If you need to use your survival gear for any reason it should be returned to the same pocket you took it from so there’s no confusion if you need it again.
Another wave of survivalism began after the September 11, 2001, attacks and subsequent bombings in Bali, Madrid, and London. This resurgence of interest in survivalism appears to be as strong as the 1970s era focus on the topic. The fear of war, avian influenza, energy shortages, environmental disasters, and global climate change, coupled with economic uncertainty and the apparent vulnerability of humanity after the 2004 Indian Ocean earthquake and tsunami and Hurricane Katrina, have increased interest in survivalism topics.
Every year in the US about 150 people die while out and about in national parks, more than 1,000 die in hunting-related incidents and thousands of backcountry enthusiasts get in deep trouble and require a Search and Rescue team to save them; with dozens of those folks dying while awaiting rescue. Most fatalities are the result of poor preparation. Bad weather descends and people get lost. They wander without water or shelter, often injuring themselves in the process. If they survive they often suffer frostbite, hypothermia, dehydration, trench foot or some combination of them all.