Since bitcoins is a worldwide crypto currency,  it's is been used since its origin but it's price are very fluctuactive.  You may not predict what will be next.  Daily new crypto currency are coming with new names and benefits and covering all disadvantages of bitcoins.  Bitcoins is already in tough competition with altcoins.  Bitcoin is continously growing but we never say about future.  May be bitcoin false down in future as fast ot grows same like this it goes down.  As bitcoins is older crypto currency, there may be new alternatives come that will force us to use bitcoin less and may be one day the market clash.  And these precious bitcoin will cost nothing,  so there is nothing predictable.