There is some other points, about Bitcoin future.
I'll try to explain my point of view:
At this moment, Bitcoin doesn't seems to have any value itself, only have speculative value, but not real useful value.
I mean, at this moment, Bitcoin is showing that is not very good scalling for a 'massive' use.
At this moment, it may take several hours to get the transaction veryfied.
Also, the transaction fees are getting higher, and with that high fees, it's not useful for small payments on the real life shopping food & needs. In some cases (few euros products), you pay more for the fees than for the product itself.
If we though Bitcoin as a cryptocurrency to use in our daily life, it's not useful with the waiting times and the high fees exposed in the previous paragraphs. For this reason, I think that has only speculative value.
So, as a speculative value, maybe at some point, the speculative bubble explodes, and with that Bitcoins, people is not able to buy real stuff, as it was only a speculative value. And then, lots of people may want to sell their Bitcoins, and this will decrease the Bitcoin value.