I think now a day it's very valuable currency in the marketplace. day by day BTC's value will be up & up, so if I earn BTC I will save all my BTC or future, future life is very harder than the present. 
You cannot say anything about your futures anything could happen, We only know about our present not about our future.
Bitcoins price is increasing because everyone is taking interest but what If you save Bitcoins for your future and one day you woke up and see that Bitcoins gave you a lost of 2k$? 
It is a risk, Only invest if you have a big bankroll or you can afford to lose.