I am worry about that BTC is not being used for the porpouse of is creation, that is being used as a currency, instead is being used as an investment, and is going to crash if is just saved and not used, so the BTC will crash to zero very soon if that does´t change soon.
I don't think there is anything wrong with people saving currency, and I doubt this will make the bitcoins crash. I know that there are already many people that use BTC to make daily purchases and etc, but I also do not think there is anything wrong with people saving their bitcoins and treating it as a stock. People often do this with other international currencies, such as when one invests their money in an appreciating currency.