Even if I had a setup like yours, I'd give up on bitcoin before "fiat banking." You can't buy gas for your generator with bitcoin.
I don’t mean this flippantly.
One of the cryptocurrency is going to win out for day-to-day usage; the question is which.
As Andreas likes to say: “email used to be a multi-step series of memorized commands from a green terminal in a University.
Now my Mom can do it with a touch of her finger.”
I believe we’ll get that in the near-ish future.
I don't know why you're so confident about this? It's entirely feasible that none of them are ever usable for day-to-day transactions.
Personally, I haven't seen any evidence that Bitcoin (or any other cryptocurrency) is ever going to enter the mainstream. Even if it did, I don't see any benefit to using it over USD for the vast majority of people.
I personally have fiber, cable, and LTE feeding my home gateway. This might seem like overkill to non-tech folks, but I recommend it to anyone whose productivity/career is highly reliant on being online.
I realize this isn’t necessarily a typical home setup, but I also think most people are horribly unprepared for many potential situations.
This isn’t a claim that I have zero downtime at home. It’s only to say that if my Bitcoin node is offline then any hope of relying on fiat banking was abandoned much earlier.