Actually this is the trust of the bitcoiners in the bitcoin to use as an secure Money which is more powerful and safe in security than any bank systems .
Here if you will think about the investor in the bitcoin then you will found that most of them don't know how to make trading and earning but most of the newbies knows that we can money by hold it for long time , due to this they are making investment first without knowing anything ( and also they got Profit according to the perfect timing of investment ) that is what the reason for the increase of the investor in the bitcoin market .