No you don't, currency is not a store of value. Your $1 or $100 bills are the very same piece of paper just with a different number printed on it (in effect a bond of zero duration since it is debt). People accept this number written on it as face value but there is no real value in it, it is perceived as one. However, there is a significant difference between 1oz gold coin and 100oz gold bar!
If gold were to displace the dollar as the primary unit of exchange, almost all of its value would come from supply and demand for trade, just as it does for dollars. Most gold would be electronic, not physical bars or coins, just as dollars are. And there would be fractional reserve, just as for dollars. At that point, to argue that this "gold" has intrinsic value as a metal would be about as silly as arguing that money has intrinsic value as pieces of paper.
Does a 1 ounce note redeemable on demand for gold have intrinsic value? If so, then you can't argue that dollar bills are not a store of value because gold notes are also the same pieces of paper with different numbers printed on them. If not, then no modern currency or money will have intrinsic value because people will never bother lugging actual metals around -- under all realistic circumstances, they'll use electronics to move IOUs around. A 1 ounce gold check against the 54 ounces in my gold account works just the same as a $100 check against the $5,400 in my dollar account.
