Having your own doomsday bunker (not talking tornado alley people) just tells everyone you are a loser, neither smart nor important enough to simply get picked up by your government and be put into the good full-service government bunker at taxpayers’ expense.
There will also be no help coming if you’re not in that bunker, so what do you need doomsday preparations for if the people who will be rebuilding consider your life worthless and kill you on sight if you tried wasting some of their resources even if your Temu bunker survived anyway.