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Still nobody has a convincing answer to why the world holds gold other than maybe the fascination of the yellowish precious metal. Considering the vaults and costs of security holding the gold, the fascination must not be the only answer. Thereby, this hoarding of gold must be some imaginary sense of security, such as if world chaos and catastrophic events occur, nations will have their gold. Gold, which is apparently more valuable than our currency.
So, if we go to other planets on one future day and gold is found, do we let it lie where its found as if, "oh, it's just gold, we don't need it." I'm willing to bet finding a fortune of gold that there will be a massive space race to immediately mine and bring back that precious metal. This means more vaults and more costs to security to retain an enormous amount of gold.
I seem to remember during my college years, earthly science had sufficient discovery in that our planet's mantle and below toward the center is molten gold. This may be why earth volcanic activity over the billions of years show gold deposits that are found on the surface. So, here's another massive source of possible gold mined and hoarded in our Treasuries.
Of little information for those who get rid of their electronics where circuit boards are often plated with a gold film for conductive paths. This gold film is removed by hard working people in such poor countries like Southeast Asia and accumulated over time. Although there are other valuable materials collected, even silver, copper and rubidium. But gold is the most attraction. This example shows how people work to accumulate gold. What was it in that Hobbit movie........"My Precious". How is gold so precious that people slave to accumulate and hoard it with enormous costs of banks and security?
Maybe someday America will have so much gold that we can all skip through the way to Oz on gold bricks, of course, with Toto. This brings up another question, "Is America's gold holding of more than 8,100 Tons enough or do we need more?".