For the time being, cash is better than bitcoin - Why ?

You can notice it every time a series of bad news enter this space it immediatelly creates panic and people move to fiat.
Even early adopters do this. - They move to fiat on bad days and enter the markets when times are looking good.

Even though bitcoin is a great currency fulfilling most of the demands of what makes a good middle of exchange - It lacks sustainability in price.

People fear volatility - they want something that is stable.

The future looks bright though, with more money and regulations entering cryptocurrency exchanges that could stabilise the prices.