April 1st joke aside, there's as much chance of a country adopting BTC as its national currency as there is of adopting Apple/Google/Msoft shares as it's currency, but that doesn't mean it won't become a popular investment just like the above shares.
It has so much more potential than any of those shares though. It could creep through the financial soil like fungi, without being even noticeable from the surface.
At the time being though its use is so limited in terms of beign able to use it daily. Yes there are big companies that use it, but how often do you need a new Dell? or shop at overstock? I mean yes it has
potential, but for the time being its relatively worthless compared to these multi billion dollar companies stocks