You cannot easily trade physical gold/silver...obvious right? There has to be something else...something controlled, something scarce, something people agree is valuable...oh wait Cool Cool Cool
Yeah what could that be

BTC will skyrocket multiple times for so many reasons its redicilous.
@Jabo: Yes, gold/silver is not valuable for usage. But compared to internet and electricity it's rather good as a store of value. And most people actually value being able to store value

But yeah, i'd store food for at least 1 year(if I had a house) before i'd buy gold.