Ironically the evangelists are probably part of what makes it such a bad currency. Treating it like a stock and constantly shilling/over-hyping it makes it's price fluctuate wildly, which makes it bad for businesses and individuals looking to use it as a currency. But since the hype drives up demand for it as an investment, the price gets big spikes now and then (which nosedive once people start cashing out lol).

This then becomes a cycle where most of the market wants bitcoin so they can later trade it for more $ than they bought it for, while its actual use as a currency is limited due to the volatility.