Because at some point the banks will fail and one of these ‘scams’ is going to be necessary for you to get along in life.

I’m sorry that this is the case; I really wish that the system we live in was sustainable, but it’s not, and it probably won’t be reformed before it’s too late. Maybe this is a matter of opinion, but it happens to be the most common opinion of people that have studied the matter without incentive to believe one narrative. I have never seen a well-informed defense by an independent writer that did not rely almost exclusively on appeal to authority.

There are opportunists. There are scammers. That’s not how this thing got started. We started this to mitigate an unstoppable problem. I personally never liked many economic aspects of the Bitcoin protocol, and dismissed it very early. I know many others that aped into mining a fortune based on much less understanding. I’m now willing to accept that it is the least bad of likely candidate solutions, and the reason for that is that all newer entrants cannot gain relevance without massive investment, which means owners from the old failing system.

I'm generally optimistic about cryptocurrencies, but these kind of catastrophe scenarios where cryptocurrencies play the role of savior have always seemed pretty silly to me.

If the US dollar collapses or experiences hyperinflation, and/or US banks all collapse, pretty much everything is going to be fucked everywhere, most likely. Especially because whatever's driving that catastrophe is probably disrupting lots of other things, as well. (A major war, for example. The global Bitcoin/Ethereum/etc. networks might become disconnected and fragmented in those scenarios. Let alone infrastructure for fiat exchanges or paying for things with cryptocurrency.)

I think these events are very unlikely to begin with, yet a lot of cryptocurrency maximalists speak as though they're likely or inevitable in the mid-term or near-term. But if they do actually happen, I think digital currencies are going to be the least of almost everyone's concerns at those times.

Actually this is exactly why there were so many people (like myself) on the Bitcoin test net, that never bothered with mainnet. Everything crashed, an entirely new political order was installed, and people just worried about other things.

But something has to come out of it all, and crypto seems like the most resilient possibility.