There are enough products that rise and fall each day, each minute. It is not necessairy to trade something that is by definition worthless ! The British Authorities are absolutely right in this issue.
Aside from the fact that cryptos have real world use, would you mind explaining fundamental value or intrinsic value?
Do you want everything to be strictly legal though? I don't, seeing how governments and businesses are abusing the laws to further their agenda. The small guy always loses in these scenarios. It's great that there's an alternative but how private it actually is, that's the question.
Nobody needs the token that's transferred. It's a digital collectible that doesn't do anything. Buffett's test is to imagine exchanges being shut down and then irrespective of speculative trading prices, value what you have based on what it is and what's it worth in the real world. E.g. a stock is ownership in a company, the company's assets, and entitles the holder to future cash flow in the form of dividends. Just being transferable in and of itself is no value. You could let me transfer random data to be saved on your computer. That's useless. Inventing a confidence trick to call the random nonsense a coin/currency doesn't give it value either (other than maybe fooling some people).
I really don't have the time to explain the global macro of cryptocurrencies to you, but you wouldn't mind anyway. However, you still did not explain fundamental or intrinsic value.
Bitcoins and other coins can disapear as fast as they did appear. For me that is no alternative ! More sense have investments in Gold, Old cars, Pictures and so on, something with real value !
Why are stable coins denominated in dollars then? With the peg maintained, aren't they losing the same as the dollar? Oh my bad, I made sense. Sorry for that.