I always wonder when speculations will end. There are reasons why some Altcoins are way better than Bitcoin. So probably after the informations are getting to the "crowd" Bitcoins only reason to be this high is: Because other currencies are connected to him in a way of exchange. After a lot of coins are getting exchangeable with fiat's. In my Point of View the Bitcoin doesn't get this high anymore. But nevertheless I think we are years away of a good fiat infrastructure.