I'm somewhat a prepper too, though I don't have much BTC. I don't think BTC would survive long against a major catastrophe.
I'd rather own valuables and bank accounts in several different countries. If something bad happens where I'm currently staying, I can just move elsewhere and keep on living the way I'm used to.
You want to know the easiest way to have a bank account in several different countries?
BTC <--
I know that very well, but convenience and acceptance is an issue. Right now in Europe, I can wire unlimited money (only limited by my balance) for free. If I want to buy a car, I just ask the seller what's his bank account, and he'll get my money the following day.
BTC is even faster, but would my seller accept
BTC? Actually, I'd like to do more business with
BTC, but few people accept it.
That is sadly true. It's actually almost free to transfer money within the EU within the banking system, so prices and availability isn't the issue here.