Sometimes people asked: Who is pushing Bitcoin. Nobody exactly know why. Of course a lot of demand comes from China, but hey they are with almost 1,4 billion. But the demand is everywhere, it is worldwide demand. But what you can tell that Bitcoin isn't regulated (except from the accepted code) and it is free market money. Nobody can print it, regulate it, confiscate it (if you hold the private keys of course). It is the people who want it. Maybe you can tell that people sense something and do not trust currencies. Maybe there is something big going on (monetary collapse?).
history will tell. From the Bitcoin point of view all currencies are already collapsing. Maye there it a part speculation in Bitcoin, but there is also a lot of demand (10 times more than last year). HODL!!