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I still have yet to find anyone who can convince me that holding BOTH cryptos and precious metals is unwise. Personal circumstances of course would influence which particulars and in what quantities should be held.
Perhaps gold's biggest problem is the inability of getting a significant quantity through the X-Ray machines at airports... That is an issue I am still working on, how does one do that? Perhaps you know of a famous/infamous gold guy named Peter ("Pete T") Trzaska, he claims that there is a way to get gold onto the plane undetected, but he declined to tell me how.
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Metals have stood the test of time as a store of value for thousands of years, I don't see them disappearing , though no longer useful as currency.
Metals have switched to a different utility now, more of a collectible asset, they will always be sought after by collectors, like artworks, antiques.
Nothing wrong with storing a portion of your wealth there, just don't expect others outside your niche group of metal collectors to value it the same way you do, nor accept it as currency.
You probably wouldn't accept a 500 year old dusty chinese vase as payment for services, but there's a niche group of collectors who would. The youth now feel the same way about metals.