Volatility in bitcoin is one of the big differences between fiat and digital currency, if bitcoin becomes stable, nobody will be able to earn profits from it and its value will decrease near to fiat. People like bitcoin because this is the fastest growing asset and acceptable in any part of the world with no changes.
I assume fiat is stable but fial also has no potential to profit you while holding
Not neccessarily. There is a huge pool of merchants, organizations, systems, and people that would love to use bitcoin if only it was stable - take for instance Steam who just DROPPEd bitcoin because it is too volatile. The real potential of bitcoin is as a currency. THIS is what would put the value of bitcoins in the 6 or 7 digits - NOT speculators. At some point there needs to be handoff from speculators to currency users - not sure how this will happen.