Bitcoin is a cryptocurrency and worldwide payment system. It is the first decentralized digital currency, as the system works without a central bank or single administratorThe blockchain is a public ledger that records bitcoin transactions. A novel solution accomplishes this without any trusted central authority
I think with you whether Bitcoin can last a long time or not, but I'm sure if the Bitcoin price stays unstable and the user increases which will obviously increase its demand and cost as well, chances are Bitcoin will always last as long as its users faithfully use it. But if the internet dies, Bitcoin will also die because with over the internet Bitcoin can be used.