There seems to be a ton of excitement about Bitcoin now, not because of what it can do, but almost entirely because of speculation. Almost none of the general public interest in Bitcoin stems from an interest in what Bitcoin is; the vast majority of people simply see it as a get rich quick asset. And the reason why people are only interested in it for speculative reasons is because it doesn't seem to have any particular benefit for most people.

And if this is a speculative bubble the way it looks like it is, it will end like other speculative bubbles. A few people will get absurdly rich, not because they added any value to the system, but because they were able to time the market. Their money will come from the many others who will lose a lot because they tried to do the same thing but were too late.

Beyond that, there seems to be a small group of people who are interested in it because they see it as an alternative to fiat currency. But strong opposition to fiat currency seems to be one of those odd economic beliefs that some people get, similar to the people who think that our society would be great if we just got rid of money and had a barter system. Outside of fringe beliefs, fiat currency is generally seen as a useful tool.