I don't believe in worrying. It's bad for the digestion, and then what good is your stockpiled food?If you're not worried about things, I'm sure I could make the case as to why you should be.
As for preparedness, I'm not sure I'm very good at it. Most everything I own except the animals runs on gas or electricity, and I have to haul their food with a... you guessed it... diesel-powered truck. Of course, since we have 40 acres I think they could all get along ok pawing through the snow to eat last summer's dead stuff for a few months if they had to. But water would be a problem. Right now we haul water from town to fill our cistern. We're hoping to get a well this year, but a well requires power. Of course, we have enough wind here some days that we could probably pump Niagra Falls into our house, so I guess we might look into a windmill if we felt like the power was going to get spotty.
We have a wood stove and more than enough oak and annual beetle killed trees to keep it going strong, but I'm not sure I'm man enough to cut them down without my gas-powered chainsaw. There's not much point stockpiling gas. It has a pretty short shelf life.
As for stockpiling food, well... I've never been too sure how that would work. I've known a lot of "end timers" who stockpile everything from food and toilet paper to guns and ammo. I know one guy who bought a gas siphon so he could steal gas out of people's cars and another guy who got his FFL, bought a grocery store, and became the local food and firearms dealer so that when the end times came he could sit on his food and shoot anyone who tried to take it. My dad once asked him if he thought that's what Jesus would do. I'm not sure the question was well received.
If things really went south, could I sit on my hoarded food and eat while everyone else around me was hungry? If so, what kind of person does that make me? If not, how far would it go? It might could feed a few families for a couple days. And if there really was a meltdown, would stockpiled food become a contraband item? There are a lot of "we don't know's" out there. The main thing is to know that nothing happens that God does not see. Every last one of us will die eventually, by hook or by crook. We could stockpile our food, only to have it wiped out in a forest fire, or we could get hit by a Mack truck and not be alive to eat it.
I'm not saying it isn't wise to be prepared for some things. It's good to have a forest fire plan where I live, for example. Or enough food, water, and firewood to get us through a big blizzard. But if the economy crashes, we're all going to have to be self-sufficient beyond stockpiling and we'd better be in good standing with our friends and neighbors because we're all going to need to help each other. On the plus side, my horses are trained to pull and I have harnesses, so my truck will still have horsepower. I can help my cattle ranching neighbors go places and haul things and they can give me some of their beef.