In fact, one of the subjects specifically told Mills that "it’s not like on [National Geographic’s] Doomsday Preppers." They weren't preparing for the total collapse of society. They were getting ready to deal with a local collapse of services that might last a few months. It's less Armageddon and more Hurricane Irma—which hadn't hit yet while Mills was doing his interviews but has since suggested that preparing for a couple of months without key services may be badly underestimating needs. Prepper supplies would typically be enough to only hold out that long, and Mills said they often referred to these caches as "more than they'd ever need."
Whoso would be a man must be a nonconformist. He who would gather immortal palms must not be hindered by the name of goodness, but must explore if it be goodness. Nothing is at last sacred but the integrity of your own mind. Absolve you to yourself, and you shall have the suffrage of the world. I remember an answer which when quite young I was prompted to make to a valued adviser, who was wont to importune me with the dear old doctrines of the church. On my saying, What have I to do with the sacredness of traditions, if I live wholly from within? my friend suggested, — "But these impulses may be from below, not from above." I replied, "They do not seem to me to be such; but if I am the Devil's child, I will live then from the Devil." No law can be sacred to me but that of my nature. Good and bad are but names very readily transferable to that or this; the only right is what is after my constitution, the only wrong what is against it. A man is to carry himself in the presence of all opposition, as if every thing were titular and ephemeral but he. I am ashamed to think how easily we capitulate to badges and names, to large societies and dead institutions. Every decent and well-spoken individual affects and sways me more than is right. I ought to go upright and vital, and speak the rude truth in all ways. If malice and vanity wear the coat of philanthropy, shall that pass? If an angry bigot assumes this bountiful cause of Abolition, and comes to me with his last news from Barbadoes, why should I not say to him, 'Go love thy infant; love thy wood-chopper: be good-natured and modest: have that grace; and never varnish your hard, uncharitable ambition with this incredible tenderness for black folk a thousand miles off. Thy love afar is spite at home.' Rough and graceless would be such greeting, but truth is handsomer than the affectation of love. Your goodness must have some edge to it, — else it is none. The doctrine of hatred must be preached as the counteraction of the doctrine of love when that pules and whines. I shun father and mother and wife and brother, when my genius calls me. I would write on the lintels of the door-post, Whim. I hope it is somewhat better than whim at last, but we cannot spend the day in explanation. Expect me not to show cause why I seek or why I exclude company. Then, again, do not tell me, as a good man did to-day, of my obligation to put all poor men in good situations. Are they my poor? I tell thee, thou foolish philanthropist, that I grudge the dollar, the dime, the cent, I give to such men as do not belong to me and to whom I do not belong. There is a class of persons to whom by all spiritual affinity I am bought and sold; for them I will go to prison, if need be; but your miscellaneous popular charities; the education at college of fools; the building of meeting-houses to the vain end to which many now stand; alms to sots; and the thousandfold Relief Societies; — though I confess with shame I sometimes succumb and give the dollar, it is a wicked dollar which by and by I shall have the manhood to withhold.
The End Of The World As We Know It or TEOTWAWKI is a common acronym for Preppers to use.  It is perceived from a personal level and indicates the end of a the way we know the world from our own viewpoint.  This can include our viewpoint of the world from a personal, family, neighborhood, town, state, regional, national or world level.  Many people suffer a catastrophic TEOTWAWKI on a family level that their friends and extended family may never be aware of.
Terrorist attacks including the 911 plane attacks, bombings in London, Madrid, Bali and many other places, led to a strong online interest in discussing personal readiness and self reliance.  Fueled by United States disasters such as Hurricane Katrina and Ike and international disasters including earthquakes and tsunamis in Indonesia, Chile, Japan and elsewhere, the Prepper Movement gained a lot of momentum without having a particular date in mind (unlike Y2K) which led to many people recognizing a need to change their lives to be more prepared and self reliant.
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.
When he gets up to show me about his cabin, Pense stands with the height and permanence of the dignified trees that encircle the property. He doesn’t say “um,” or “well”—the slow, deliberate syllables that emanate from his jowls feel like historical record, perhaps with a sprinkle of Americana, but not quite jingoism. Listening to him talk about his life is like having R. Lee Ermey recite your high school American studies textbook, but gentler.

FEMA recognizes that widespread cultural change is a long-term process, and while the national statistics on basic preparedness actions have remained largely constant, findings documented in Preparedness in America offer valuable insights for adapting education efforts to increase preparedness. Key findings from the research focus on the public’s behaviors, knowledge, and attitudes related to preparing for a range of hazards.