1) A lack of faith in central banks and their long-term control over government currencies
2) A desire to hold currency that has positive expected value when more efficient means of production are discovered.
That is all.
-bgc
The first one is so accurate. I just witnessed a thread about how untrustworthy the central banks are haha.

Although bitcoin is backed by nothing but people. The question does have a point. It is what bitcoin is not backed by that matters though wink wink.