Sorry guys, there's quite a long history which contradicts with you.
Not saying you're wrong that other metals/commodities will also shoot up, but gold also will (and I agree that silver/gold ratio will probably go lower in the long term, for basics fundamental reasons).
And no, gold is not yet in a bubble. You could argue that it was in some sort of short term bubble a year ago, like silver a year and a half ago, but it popped, and now we are at the bottom.
http://www.npr.org/blogs/money/2011/02/15/131430755/a-chemist-explains-why-gold-beat-out-lithium-osmium-einsteinium.
This article is a good answer to the "Why Gold ?" question. Just the best properties as a store of value, selected by a long experiment (thousands of years).
That's the reason why the "Gold line" is an easy push : It's an optimal choice. It is the best kind of money people have found in History*.
For the comparison with say copper or silver : Try to pass borders with years of saving in silver or copper, you'll understand the issue (though silver is probably not that bad if you're not too wealthy).
And I also don't think everyone and their mother own gold, that's just false. They own paper, in various forms (most of them denominated in USD). And they will be the one to suffer.
Never forget, there's two component in the price of gold (or any price) : Value of gold/Value of USD. What we are seeing is not that much a rise in value of gold, it's more a loss in the value of the USD.
I'm not sure USD is gonna implode btw. That's the catastrophic scenario, if they can't prevent hyperinflation. But I'm sure it'll loose a lot more value in the next decades. So yep, the price will shoot to numbers which seems totally absurds, even if the value of gold stays the same.
* : And before cypherdoc comes saying that there's a better money, which is called bitcoin : Bitcoin had been created/discovered, and some of us recognize its superior properties. Now we have to wait for it to be selected by mankind.