Wanna take a bet on that?
http://www.macrotrends.org/1340/gold-vs-the-cpi-historical-c...
Gold is out there, sometimes swinging by 1,700% over a decade... while the CPI doesn't change any more than ~100% / decade.
Dollars (and investments measured in dollars: ie Inflation-protected Bonds like TIPS) retain their value better than Gold, while providing a more stable platform. A 10-year note at even 2% offers you 21% growth over 10 years... much better than the long "valleys" that Gold investments suffered across the last century. (And with historic rates sometimes hitting 14.56%, it was possible for 10-year notes to hit 370% growth over 10 years).
Gold doesn't grow in value in the long term. And as shown in Gold Volatility Index, Gold is also a very unstable investment historically.
In fact, Gold's volatility today is the same as the S&P 500 Index.
http://finance.yahoo.com/q?s=^VIX http://finance.yahoo.com/q?s=^GVZ
So it is just as volatile as stocks... while offering poor gains historically. Neither the conservative nor aggressive investor would want this kind of investment. That makes gold a "piss poor" investment in my books.