There are a few challenges facing Bitcoin, and I think that in the long run Bitcoin will not be the chosen digital currency of the world. The first problem is that there is a highly predictable and (at the moment) constant supply of bitcoins, which means that the value of the coin will adjust like a commodity as more or less people start to use it. It's like Gold or Oil in the sense that when people want it, it's wor…
This is the "No one will want bitcoins because everybody's buying them" argument- I don't see much credibility in it. Also, what is an example of a commodity that isn't at the mercy of supply and demand?
> Another problem is that the currency is highly traceable ...
I agree with you that that is a major issue, and might hurt the popularity of bitcoin in the long run. Bitcoin is strange in that it separates the argument of "I don't want the government to control what I do" and "I don't want the government to know what I do". I'm not sure how this will play out long term. (yes, I know there is pseudo-anonymity, but if the tax man comes to you and asks you "how did you get the money to buy that car?" the block chain makes it possible to confirm/refute your response.)
> ... and thus caution should be used.
Yeah, I'm tired of folks who think they know with 100% certainty how the economy works. I have some good guesses that suggest to me bitcoin is going to do very well, but things could play out any number of ways and I have no clue whether my guesses are right.