It's definitely possible that Bitcoin and other cryptocurrencies could eventually replace regular currency, but it's not something that will happen overnight. There are a lot of factors that need to be considered, such as whether or not people are willing to adopt this new form of currency and whether or not the government will start regulating it.
That being said, there is no doubt that Bitcoin and other cryptocurrencies are here to stay. They offer a lot of advantages over traditional currency, such as increased security and privacy. So I think we'll continue to see more and more people using them in the years ahead.