In the world today, many people prefer to keep their money in their house save because of the perceived fraud by our traditional banking system that has decided to rip the populace off their hard-earned money without remorse, through different unexplainable charges, this has changed the mindset of the un-banked because of the complaints coming from the individuals involved in that process, this individual, both the ones that are already banked and the unbanked are looking for alternative other alternative means that they will use to safeguard their wealth.
If you keep money (fiat) in your house, you can easily spend it, you will only noticed you spend it very fast. If you do not spend it, someone can know and invite a thief to steal your money. If thieves do not steal the money, the banks are still robbing you buy decreasing the value of your money during inflation in a way that what you can use it to buy today, you can no more se it to buy the same amount of thj g next year.
See what that happened in the El Salvador, that IMF and US government did not like. Bitcoin is now available to the unbanks in El Salvador and their economy has not collapsed but life made easier for the El Salvadorans.
But one problem is bitcoin can not help the unbank people in countries that do not adopt bitcoin like El Salvador and also in countries that prefer to spend fiat. Most people order to spend fiat and use bitcoin for investment.
Another thing is that people that knows how bitcoin works will have bank account because bitcoin is not for illiterates but for people that are literates to operate phones and computers.