"Survival", as conceptualized as an industry, is that you're holed up in a secure location with adequate food, ammunition and other essentials to last months to years. Plenty of preppers who diligently prepared bunkers for the end of the world emerged from those bunkers, not because they ran out of food or ammo, but because their hair got too annoying to deal with and cosplaying survival did not extend to actually learning how to cut their own hair vs giving up the pretense and having a professional do it..