My family joined BitGold shortly after the service started. We made it a habit to add to our gold holdings over time, usually buying more on a monthly basis. My wife would point out that "the price of gold was going down" and I would remind her that "the Canadian dollar was going down". Looking back on those months gold and the loonie remain with a half percent of each other as measured by our account balance.
Of course we would have been ahead if we had held US dollars during that time but frankly I have no desire to hold more fiat currencies.
At some point I am confident that the market for gold will turn very bullish again and that gold will not only protect our purchasing power but will increase it.