Fair weather preppers?
Interesting concept. (saying over here, meaning they are only into it while it's the "it" thing)....
Look, no matter what scenario actually occurs, almost one thing is guaranteed to be a factor.
The grid will go down.
Whether it's a natural disaster that is worldwide, a plague, an asteroid, nuclear war, or even zombies, no matter what the SHTF event is, we're going to lose the power grid.
With that, comes:
1) No more deliveries of food to stores
2) Massive rioting and looting in urban areas
3) Breakdown of law enforcement, so general lawlessness
4) Massive sanitation issues
5) Eventual starvation and mass diseases
6) Other losses through violence
So, no matter what, if it all goes to hell, regardless of cause, the above items are pretty definite. And given that it would take close to two years to repair a major attack on the grid NOW, in peacetime. Imagine what would happen in a crisis....
Being prepared is just smart.
And, let's say you don't think the S will ever HTF.... There are still other emergencies that are short term, where prepping can help. Preps helped me stretch our food budget when I got laid off before. Having spare water helped when we had a pipe leak and couldn't use the water for a couple weeks (at least not for long at a time). Having my kit in the car has often been the difference between an enjoyable night out, and feeling miserable. (OTC meds, spare socks, spare stockings, blister band-aids, etc., etc.)
LOL, my wife is notorious for getting a run in her stocking on the way to a place. She didn't even know it, but I had one tan and one black of her type in my kit. She started cursing up a storm, until I had my daughter pull it out of the pack. First an eye roll, then a smile and a kiss, and a good night had by all.