Bitcoin is slowly growing in popularity, apart from all the diverse problems, there remains certain psychological security in the currency that is in someone's hands. In addition, the fear of hacking, viruses and other attacks on the overall foundation of a country's finances through pure digital means is likely to make most countries slow to adopt such a form of currency. Bitcoin can never be replaced by other cryptocurrencies. Bitcoin is a maternal cryptocurrency, Therr will have no other currency if bitcoin will not be found. Litecoin is 2 to bitcoin in cryptocurrency. And the lite coin is too far away from bitcoin so it will never replace it