If you understood Bitcoin, then you might reconsider that first line.

Sure, I'm well aware that you can't eat these currencies, but this begs the question:

If we accept a poorly-managed fiat currency like the USD, and some countries have to deal with atrocious, hyperinflating currencies that shaft most citizens, then what's the alternative?

You speak about hard assets, which will continue appreciating, but there will still need to be a medium of exchange.

People suggest physical gold or silver but good luck with that.

As we mostly use digital payments nowadays (at least in the West), one possibility is to use digital gold, literally speaking. For example, Tether Gold (XAUT).

However, this raises other questions, which warrant an article in itself.