I will tell you right now, I guess I'm blond, but I don't understand how crypto works. Or mining crypto. It seems to me like a scam of some kind.
I can't buy groceries or gas with it. So what is the value?
The concept behind cryptocurrency is essentially that of a private currency, the supply of which is unregulated by government policy.
The mechanism was proposed by a guy who used a pseudonym and whose identity still remains unknown. For Bitcoin, one of the oldest and best-known "cryptos," the supply was fixed at the start, and to "mine" crypto, users basically had to go on a treasure hunt digging through the Internet for virtual coins. As time went on, and coins were claimed, they became harder to find. Furthermore, the structure of most cryptos, "blockchain," inherently becomes more bloated with time as each transaction adds to every other one on the "distributed ledger." It is, essentially, a game.
Now, in theory, if enough companies adopted a particular crypto, it could gain mainstream acceptance. But because Bitcoin was fixed, the value of it spiked far beyond what could be useful for basic commerce and nobody wanted to use it as a medium for spending. It became a vessel for speculation.