@jking007 said:

Well, the US dollar is not really worth anything either, but we all agree it has value. Pretty much the same with virtual currency.

No, it's not the same at all. We all agree the US dollar has value because it is backed by the "full faith and credit" of the United States government. This is why making sure the government does not default is important. Nobody "backs up" bitcoins, there's no Federal Reserve controlling the flow of bitcoins into the economy. Furthermore, the total number of bitcoins is capped at 22 million. There is no cap on the possible number of dollars or euros in the world.