The experience of many people after the severe weather events in the past few weeks is that when the power goes down, they can’t buy things with eftpos cards, and need to resort to old fashioned cash, or barter.

Having a good supply of cash is thus desirable. Further reasons include saving the whole community bank fees, and stopping the surveillance state — which was massively ramped up under Comrade Jacinda — keeping tabs on dissenters’ movements. (Keeping cellphones switched off when not in use is another way of stopping that.)