Bitcoin will never disappear lets be real here. It's been around since 2009 and survived the drug-money test.
very honestly bitcoin can disappear, but if the people stop using it and the miners stop mining, or some big issue occured to bitcoin, but hope such unexpected and unwanted issue will not happen to bitcoin and bitcoin will continue to survive for every, and soon we will see that people will satart using bitcoin as fiat currency in their shops.