Is Bitcoin the future of currencies? Well it's too early to say right now, but probably not.
I believe it is safe to say that it can have its own suitable place on the internet. There is no stopping it now.
Is Bitcoin the future of crypto currency? It is for now and will probably continue to be so for the next year or two.
The next year or two? Then what cryptocurrency do you propose that would replace Bitcoin? Is it as widely accepted by the merchants? Is it as secure as Bitcoin?
When it comes to understanding which crypto will last, we can't really peer into the future and get told which coin is worth it. A altcoin could end up on top of Bitcoin a few years from now, we simply don't know.
I agree, but it is also possible that Bitcoin will stay on top forever.