I think part of the prepping boom if you like is the realization that things can get rough, the older ones like myself forgot the days of power cuts, and all the rationing and hand me down war stories for a while there when things got rather stable, we even had a peace dividend when the cold war ended, which when you look at it was folly, the threats have just shifted and the tools to protect against them changed, only we throw far less money at it without the red demon staring over the Berlin wall at us
I'm 60s born when the power went down, mother said no problem and out came the camping stove and candles, do the same to my children and the nerd withdrawal symptoms would kick in PDQ and you would have a panic then a battle on your hands before the adventure started ( I'm only talking about the half day power cut here).. same sort of thing stocking up for xmas - well to an extent you had to because everybody shut shop for a few days and the weather at that time of year back then could turn soon after so having a winter stock pile was sensible.
This winter's storms show that some of us will feel effects of calamities which prepping can ease, and make good conversation points, I'm not low lying so floods are unlikely in our street yet can cause havoc nearby, if you discuss how you would try and preserve you possessions in such an event ( we did) it does help a natural preparedness mind set to emerge in most people, and I will go as far as to say that those who poo poo the idea and refuse also know it could happen to them but prefer to just bleat for help, which reminds me of how I amused a shop assistant last year, I was shopping for stationary items in yep a stationary shop, the lady came over to me as I was looking around and asked if I needed help? I said perhaps later, I would rather have a good look around and see if I can find what I need myself than bleat for help after 10 seconds, she was most amused, maybe it's the hunter gatherer under the surface I don't know

yet it still ticks me off no end when supermarkets keep moving stuff around.
Anyway keep talking to your partners not starting from TEOTWAWKI, little things like why let your petrol tank flirt between a quarter and empty and get caught short when the tanker drivers go on strike- I keep ours between a three quarters and full ( Usually £20 once a fortnight does it or over does it and I keep any change separate for times when we do more miles) my main use for the car is shopping and the shops will be out of stock long before I'm out of petrol so I'm prepared and that is my normal, things which make good sense are the best starting point, if you go from empty cupboards to wanting to buy a bunker next month, no one will take it seriously - the bar is too high, a little discussion and you will both probably come to the conclusion that you're preppers anyway.
I have a strategy, it's not written in stone, nor can it be, this scenario has too many variables, everything about it depends on those variables, being specific is not possible.