Any scarce resource people want is worth very much. Be it gold or bitcoin.
You can't make gold (technically you can by transmuting elements but it will cost you more gold than the gold you will produce) but you can mine it with great cost.
Why do you think Amazon warehouse workers are payed less than Amazon coders? Because it's easier to find a warehouse worker than a coder.
What something is "worth" is dictated by the market. Which means it is dictated by the laws of supply and demand.
If we're both on a secluded island and you have 10 tons of gold and I have one hundred kilos of potatoes, my potatoes are worth more.
If we're both in NY City, my potatoes are almost worthless and you are incredibly rich.
Looting S America of gold did not make Spain wealthy.
The same thing happened with both the California and Yukon gold rushes.
The same thing happens when the government prints lots of money.
What creates wealth? People creating goods and services that people want to buy. Things like making planes, trains, and automobiles. Making hamburgers. Making search engines. And so.
P.S. I always laugh at Jackson's Smaug who has a hoard of gold amped up to 11^11. It was so large it was beyond absurd. If even a portion of it was dumped into the Middle Earth economy, it would promptly become worthless.