It is said that bitcoin will destroy the fiat system but i believe that if this happens the world will change completly because banks and a lot of things will go out of market.
In my own opinion, bitcoin would be used by almost everyone in the year of 2022. I see that bitcoin users are increasing every year because some people are advertising bitcoin or making it more popular, that's why there are so many people who began interested to use bitcoin for them to have a source of income.
Yes your right, bitcoin would be probably used by almost everyone in the year of 2022 because bitcoin is becoming more famous and more people are using bitcoin every year so they could earn bitcoin. Maybe bitcoin will be the new global currency in the near future because there will be so many users of bitcoin.
I truly believe that bitcoin will be used by almost everyone in the near future because every bitcoin users in the world keeps increasing because there are so many people who are interested to use and to earn bitcoin, and i believe in the near future bitcoin will be the new currency and will be declare as a legal currency.