Let me fix this for you:

Some people are opting to change their dollars to btc. Some are opting to hedge a small amount into this new system in case recent monetary experiments explode. Most people are speculating (as they do in forex markets today).

And there is nothing wrong with speculation, but when Coinbase is adding 100k accounts every few days it is not people thinking fiat money is about to implode.

As an aside, if you listen to the hardcore BTC people and replace BTC with gold it is the exact same arguments. Over long periods gold has been a terrible investment compared to something like the S&P [1] so keep that in mind when hyping BTC.

[1] http://www.marottaonmoney.com/since-1979-the-sp-500-grew-13-...