Earlier quoted context omitted.
Gold is inflationary. There's infinite amount of that on asteroids and other planets. Bitcoin is totally an asset. It will probably have far wider usage than currency.
I wrote a 30+ words comment, but to make it shorter: * The nature of BitCoin could make it from an asset worth 350 USD to 0 USD overnight. * Gold has been there for centuries. I won't even comment on the asteroid thing.
No. Not unless it stops being traded for anything. Read this:
http://bitcoinsurvey.wordpress.com/2013/04/08/what-is-the-re...
It makes sense if you think about it. As long as 2 parties will accept Bitcoin as a trade medium, it literally MUST have a value in order to carry that exchange value. Whether it's 10,000 coins for 1 pizza or 1 coin for a gold bar.
So no, it will never go to zero anymore unless something as useful and unique comes out which is at least twice as good (due to network effects).
That doesn't mean a portion of the current value isn't speculative. But the speculative value is NOT "all" the value.