I agree that paying for things directly with bitcoin doesn't make sense. However, that doesn't mean bitcoin doesn't have a use case as a global settlement network and volatility isn't what's important, it's liquidity, which bitcoin has far more of then any other cryptocurrency.
For an example of this take a look at something like Strike Global using bitcoin's lightning network.
For an example of this take a look at something like Strike Global using bitcoin's lightning network.
https://jimmymow.medium.com/announcing-strike-global-2392b90...