As crypto currency possess possibilities of earning opportunities for those who intend it as a means of income or for almost any facet that require its Blockchain technology, only but fractions of the population right now would survive and be masters, should there be new nation's breaking out and considering adopting Bitcoin as legal tender,
I think the direct benefit of income earning shouldn't be the major reason for country to adopt the use of bitcoin as legal tender. The technology of blockchain should be in focus rather than immediate financial gain. Like the example of El Salvador that legalized the use of bitcoin, the report available doesn't show that such investment by the president, Bukele has been successful at least not for now with the bear market. It is not that the plan or investment in bitcoin wasn't noble in itself but because bitcoin is a volatile and fluctuating asset, it has to be a bull era for the investment to grow (same as hodler) From the information so far, the investment is classified as a failure like I deduced on the volatility of bitcoin but certainly when the bull return, I believe the worth of investment will improve but not in bear depending on the price bought.
I think Bukele used DCA , buying at different times and batches but price is yet below investment area
or should there be a world disease/virus/zombie apocalypse. It would make sense because the old money systems are really either obsolete or have become insufficient to cover concurrent expenses due to inflation.
These times are when the advantages of bitcoin is exploded. Like during the COVID-19 that social distancing was the order of the day, bitcoin became more important which saw the price steadily increasing since it was on high demand. This buttress the point of technological relevance and not only for pecuniary gain with the example of El Salvador above.