Bitcoins is now climbing its height at its speed. No one can say that it will disappear or become unused at this moment because we know that bitcoins will last long and if something happens in the world all the bitcoins users will fight for that and get the rights what all the bitcoins users wants. Its the power of bitcoins.
yeah all bitcoin users expect to survive. many competitors who will come
but I believe bitcoin will survive, if the user bitcoin has spread, there will be no more, which could restrain growth the bitcoin