In the initial thousands years ago,  Kings and Kingdom where the currency is gold and silver which are now our assets.  So talking about bitcoins we can not predict where it may go.  It may be go down.  Or it may be increased.  But I think bitcoin is now currency in which you can invest also.  And you can make  money out of it.  Bitcoin prices are increasing daily.  And it has already crossed a price of $6000 so you never predict what will next in case of bitcoin.  Bitcoins is a currency for me.  Which have its own benefits and faults.