"The way it is structured Bitcoin is most certain to follow the fate of gold that ended up only being a store of value.
This is because of its fixed stock. The success of fiat money is that central banks can create more as the demand for money increases thus making it useful as an exchange mechanism and unit of count. Of course the decree of “legal tender” is a huge advantage too."
Read the post here:
http://www.cryptocoinsnews.com/2013/09/01/deflation-will-not-cause-problems-for-bitcoin/
But what about competitors? Other coins? Failures? Too high prices that will cause it to get extinct?