Earlier quoted context omitted.
Ask the Zimbabweans about the insignificance of 14 zeros in your currency. History is littered with far more examples of currency revaluation than long-term stable measures of wealth (in fact precious metals are, possibly, the only example).
Zimbabwe had hyper-inflation, which made currency worthless as soon as it was printed. Bitcoins have the opposite "problem".
With hyper-deflation, spending $1,000,000 in the morning would be a losing proposition because by nightfall you might buy the same good for $1,000.
Both suffer severe problems, economically, but who loses and who wins changes. The matrix is something like this:
Inflation| Buyer | Seller |
---------+-------+--------+
Early | Win | Lose |
---------+-------+--------+
Later | Lose | Win |
---------+-------+--------+
Deflation| Buyer | Seller |
---------+-------+--------+
Early | Lose | Win |
---------+-------+--------+
Later | Win | Lose |
---------+-------+--------+
Ultimately, neither one is good. In the case of moderate deflation and inflation it's similar. There is less motivation to invest, greater motivation to save under moderate deflation. Moderate inflation increases the motivation to invest, but decreases the motivation to save.