I'd also like to hear your reasons for why Bitcoin will replace fiat. Bitcoin's purpose was not to replace or compete with fiat, but rather to provide an alternative to the problems caused by monetary policy issues with fiat currencies themselves. This then creates unnecessary comparisons, as Bitcoin can coexist with any fiat currency. This is the root cause of people seeing Bitcoin as a rival or even a potential replacement for fiat currencies.

Honestly, I hope Bitcoin can become an alternative that everyone can utilize, so that its presence doesn't disrupt the fiat currency system and instead can coexist, allowing all communities to benefit from its advantages. Thus, we have options if we want to choose one, based on the advantages and strengths of each.