With a name like Goldman Sachs, you might expect the world's most famous investment banker to be rather partial to the shiny yellow metal -- but the truth is far from that case. And Goldman's not the only one who's nervous about gold.

Listen in, as Motley Fool contributor Rich Smith explains why investing in an ETF iShares Gold Trust (NYSEMKT:IAU) may not be a smart decision, and why he's got more confidence in the stocks of actual companies such as Coca-Cola... or even Goldmans Sachs itself.