I honestly don't think it'll happen, certainly not in 15 years... In 100 years maybe?
Lol, how did you say that? and how did you know that after 100 years bitcoin will replace dollar. Nobody knows what will happen tomorrow, but there is a possibility to be happen that bitcoin can replace dollar depending on how the people around the world will adopt bitcoins.
Agree i dont think is happen. But no one knows what happen in the future what if bitcoin price collapse do you think bitcoin replaced dollars ? For sure no . Bitcoin price is how many people in the world use bitcoin if many people are use bitcoin i think the price will pump more and more and that time it will now replaced dollars but the government will dissagree.