The part I don't understand is the bigger threat that seems to be discussed here. The idea that starving friends and family will be knocking on your door and you will have to turn them away. The idea that you need lots of ammo to protect against starving masses of zombies. It's the societal threats as they relate to prepping that I am looking to understand better.
i think some of this is cultural. i have a lot of friends who are in "the bubble" and dont have any idea what is going on outside their sphere. they go to work, spend their money like they didnt have a care in the world, and assume if the utilities go out someone will be there within the hour to fix it. so if things are going along like normal for you - or you dont know anyone who's lost their house, or has been unemployed for a long time, then it probably seems weird. the problem is - its not just individual anymore.. its lots of people. and all you need is one bad thing to happen (illness, job loss, financial mistake) and then you'll know what its about.
to be sure, some of the stocking up just makes sense. the harvest comes in all at one time. or if you have a long drive to the store you cant just hop in the car to get one item. so you learn to have more on hand. and after a while spending money you dont have to seems weird and wasteful.
and - around here we KNOW we are on our own. in normal times we are at least 25-30 minutes from a 911 call (on their best day) so we assume we have to take care of ourselves. we are, literally, the last house in the country to have our electric turned back on after a storm and that could be days - not hours. and we would have a hard time riding a bike - let alone walk - to the closest store. and rural crime is on the rise. guns, ammo, and gates? thats everyday life. and in a bad situation it just gets worse.
not only do we have the 'regular' kinda rural crime - but add the meth houses and all their fans. now you got crazy drugged out people, who want money, and there you are with no one to call for help but the dog. so the idea that some weirdo is gonna show up at your house - not beyond the scope of extreme possibility. we've had three home (actually farm) invasions in our area in the last month - you dont need a mass of zombies, you just need one.
also this kind of lifestyle lends itself to some hard core practicality. so when you see people you know loose their house because of either a bad break - or just stupidity - and they are already calling for a house payment or to joke about how they are "gonna move in." and you hear it all the time? and the you start hearing it from more people? or people expect you to provide some of your hard earned farming efforts (why wont you just raise a pig for us?)? and expect you to bail them out while you're busting your butt trying to make it work? when you become the 'responsible' one of your extended family then the others just kinda assume that they can count on you. and since they dont want to be "one of those weirdos" who preps. so in the back of their mind they are just kinda counting on you.
and around here there are a LOT of multi-generational households because they dont have any other options. so the idea that your ill-prepared family is gonna show up? also not beyond the scope of extreme possibility.
i think another cultural aspect is that a lot of us rural people come from families who lived thru the Depression and we still know the stories. my grandpa was in a position to help a lot of people who otherwise would have gone hungry. i still remember strangers coming to see him and saying "we were so poor we would have starved if it wasnt for you." so we grew up knowing that these things can and do happen. my grandma was 'farm poor' so they never went hungry - but other relatives really struggled in the city.
if you want to better understand this then check out what life was like in the Depression, for families in the Dust Bowl, or most recently in Katrina, or the flooding in Australia.
the question isnt why would we see this 'bigger threat' the question is - why wouldnt we?
but your mileage may vary. *shrugs*