More is being used than is being pulled out of the ground. Unless cultural norms change and another (perhaps cheaper) non-corroding conductor comes around this is not bound to change.
It costs about $300 an oz. to get the stuff out of the ground setting a bottom price.
That all said gold's current price is largely driven as an inflationary hedge or a store of value. With worries about the solvency of many European nations (e.g. Greece & Ireland) and the potential insolvency of the $USD due to their ever mounting debt investors often need a place to park their wealth.
In conclusion, gold's future price is likely to be driven by macroeconomic factors and US budget deficits. I'm optimistic about neither; if you're worried about selling and gold doubling hold on to it.