I've kinda always been a prepper, having grown up in the 70s in Ireland with power brown-outs, living rurally (0.5 mile outside the village, 10 miles from the decent town, 25 miles from the city) and not having much of a local support structure (DPs came from the capital city 250 miles away!). So we had oil-fired central heating, and coal/log fires (that I'd regularly have the big chopper out to split logs for, and filling coal buckets was just an everyday job). Big storms and a general lack of generation capacity, and the oil crisis, all meant regular power-outs for us. Water was rarely an issue, but a couple of times there were frozen pipes. And being the 70s and 80s, there was a lot of economic hardship so food was important to use well, and Mum would occasionally buy a half a sheep from a farmer to freeze, or big cartons of tomatoes to freeze and use for sauces, or the full boxes of apples from the fruit farm as our snacks, and Dad grew a lot of veg in the garden alongside his FT job. And I was a girl guide, so not only did I learn "normal housekeeping skills" (like sewing, baking, cooking, DIY, first aid etc) at home, I learned a good few more "survival skills" with Guides and later Scouts (building fires, cooking outdoors, planning ahead, building latrines and toilet pits, safety on outdoor activities, all sorts).
When DD was 1, I managed to get an allotment and made decent use of that for 5 years - but I was working FT, DH was travelling 50% of his time, and it was just too far away from home to continue to be viable. So now we focus on growing what we can at home. I try to batch cook, whether that's just a double batch to freeze a portion for another day, or a full on freezer day. I make a lot of use of leftovers, including making stock with bones etc when time allows. I also have a decent storecupboard of dried and tinned foods to keep us going, which I review every autumn in general (part of an 18 week plan to go through the whole house, cleaning and organizing in general, and prepping for Christmas as well), and if the weather forecast is dodgy it gets an extra check.
We've been through winters where pipes froze and we had no water, then reduced pressure and overnight outages for weeks as they refilled reservoirs and fixed damage. But we had a few bottles of water ourselves and plenty of suitable containers for drinking water, and we used the rain butt in the back garden to fill buckets for the toilet.
We have a tradition on our street when it snows enough to cover the grass - we pull out the 3 gas BBQs in various back gardens and have a "snowed in" BBQ for the whole street! But we have also been known to use the BBQ for regular meals when power goes out - and our cooker is dual fuel so we can always light a gas ring with a match if we have no power, or cook in the oven if the gas is cut off. And as we are into camping a little, I have a 1 ring gas stove with a few canisters of gas, and a portable charcoal BBQ, both of which are kept at home in winter rather than with the tent etc in a storage unit about 10 minutes away (not far, but awkward to get to if items needed urgently). And the cooking utensils for those.
Heat and light are decent - we've vastly improved the insulation in the house since we moved in, and got lots more light in when we extended. We have a wood-burning stove to heat the sitting room (and effectively all of downstairs by opening doors) as well as a very efficient gas boiler for central heating and hot water. With a backup electric immersion for hot water too, and an electric shower running from mains cold tap. We have loads of candles and holders for them, and quite a few torches (headtorches, work laps, solar ones for the table) - and batteries are something I keep a good stock of as well (Xbox makes good use of that!). And I have good first aid supplies too (not as far as suture kits yet though). And I have boxes in the car boot for when we are travelling (we often take long journeys in the depths of winter so need to be ready for getting stuck on occasion).
I am more of a prepper for things that are difficult but likely to happen us at home, mostly caused by weather events. Or massive delays on roads. I do keep an eye on economic events, and in the real bad days when banks were threatening failure a few years back, had a number of months "survival money" in the safe at home in cash - but I don't do that at present.
But a fair amount of my actual day-to-day prepping efforts are to keep the family going. DH and I both work FT (he has a LOT of travel and I have some as part of our work), our DD has some SNs that need additional attention, and both of us are living "away from home" so we don't have much by way of support here. We need to have things so that if plans change unexpectedly (for lots of different reasons) or if we have to adapt because DD is having a hard time that day, we can run with it, still eat and have decent sleep and clean clothes and keep functioning as a family and as individuals.
For example, in the autumn of 2015, we had a member of the extended family suffer an illness and pass away over the space of 5 weeks that totally floored us, and came out of the blue but meant we were barely present in our own house for almost 6 weeks (and when we were, it was trying to keep work and school going, and get organized for the next trip - while everything kept changing 250 miles away on a daily basis). Since then, DH had spent initially every weekend for 2 months and now every second weekend since (18 months on) "down home" to support his surviving DParent (his 2 DSiblings are each doing their own parts as well). Meanwhile, he is still travelling, I am going down some weekends but very few as I have commitments here, and we need to keep everything else functioning as well. So having some plans in the back of my head had helped, a little, but we've been juggling a lot and my skills to prepare ahead, plan ahead and keep things going have been massively stretched in the past 2 years.
So while Armageddon, Trump, Bexit, economic crashes, climate change etc may all well be out there on my horizon as things I should be prepping for, I am solely focused at present on keeping the day-to-day show on the road, support DD in growing up and gaining independence, support DH dealing with his bereavement (and cope with my own feelings on it) and support him supporting his DParent, and ensuring both of us continue to manage at work etc.