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Its not revolutionizing the world, but it is allowing people to shop online without having their transactions spied on by credit card companies or the government.

Cryptocurrencies are the only viable mechanism for online financial privacy that comes even remotely close to widespread adoption and use.

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Which is why the main value is and will always be illegal transactions. That's the problem it solves, it's not 100% a bad thing cause it prevents the gov't from possibly abusing power in controlling of financial transactions, but the main impact of crypto is to allow organized crime to operate.

There are plenty of legal purchases that people would want to keep to themselves. If there were an anonymous non-cash way to purchase legal medications, many people would take that option rather than reveal health details to data brokers.

Maybe my answer is entirely UK based, but I'm pretty sure if I asked in my circle of non tech friends, I don't think any of them would have a concern about buying anything legal on a credit or debit card. You might not want your friends to know, but I don't think they care in the slightest about the bank or CC company knowing. And even if they did, that can be obfuscated a little more by buying it with a non-high street bank (like Revolut) they never have to go into/use for their mortgage or whatever.

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