The thing that I don't like about investing in gold or silver is that the amount is unlimited even though it's hard to get, while bitcoin has an amount of only 21 million (cannot be added or subtracted) which makes me believe in long-term investments and also future of bitcoin, and also the best investment of the last decade.
The supply for gold is far exceeded by the demand or requirement long term for gold backing financial instruments. At present gold is not rated as having any worth beyond historic and industrial, the idea is the world has exceeded its utility. The central bankers say their politics and innovation of FIAT standards make gold pointless, QE etc. Or in the crypto sphere some think gold should be replaced entirely by protocols established here and there no worth in gold.
My take is neither view is right and all 3 are likely to continue and demand will outweigh supply only FIAT dollars will find demand drops vs that endless supply.