Just a rant here : most people that go into cryptos are in it for the profit. Now the system (govs/banks) are turning that against us and we're reinforcing it by trying to speculate against eachother and going back to their fiats.
That is the normal consequence of bitcoin, even though pretended to be a currency, because
it has the monetary policy of a highly speculative collectible, in the same way rare paintings or old sports cars are. A lot of emission when it has no value (when van Gogh wasn't renowed), and a diminishing emission when it catches on, is the recipe for "get-rich-quickly" speculation. From the moment that a collectible can rise in value without bounds, it becomes of course a speculative asset. From the moment the only thing such an "asset" has going for it, is its market price, of course you get speculative bubbles and crashes.
The fundamental property of a good currency is that it is constant in value, and hence neutral in its use. It is a perfect store of value in the short term as well as in the longer term: what you put in, is more or less exactly what you get out of it.
A currency is NOT an investment, and that neutrality is exactly what turns it into a currency: that you can store value in it when you acquire value, and that you can get
the same amount of value out of it when you spend it. That's the entire fluidifying role of a currency in economic relationships.
Nash called such a hypothetical asset an "ideal currency". In order for an asset to get close to an ideal currency,
its emission should be coupled to its market price. That's the official role that central banks have. The criticism to central banks is that they abuse of their power, but that is no excuse NOT to have a regulation mechanism. Bitcoin doesn't have any. There's no extra emission of bitcoins when the price rises, as it should, if bitcoin were to have the pretence to become a currency. The naive gold bugs theory that good money is a collectible, is simply wrong. Collectibles that serve as money can fall in what's called a deflationary spiral, which is nothing else but "a speculative bubble". You hoard the asset with the hope for it to rise in value. That hoarding lowers its velocity, which indeed, makes its value increase, which, in its turn, inspires even more people to hoard it. If people have been hoarding it like crazy, and only a very tiny fraction of its volume is still used as a currency, the price of the currency is extremely high. It then becomes tempting for the hoarders to "cash out". That will significantly increase the small pool of circulating currency: if 99% was hoarded, and 1% cashes out, the circulating supply doubles, from 1% to 2%. This has a strong effect on the price of the asset, which can lead to people wanting to cash out before their gains are gone. We get a hyper inflation (a crash).
The words "deflationary spiral" and "hyper inflation" are the monetary speak of "speculative bubble" and "crashing, popping bubble" in stock market language.
A collectible goes through these cycles (once, or several times). It is useless as money, because of the high volatility. If there is no price-regulation mechanism, there's no hope. Bitcoin has no price regulating mechanism.
Another way to regulate the price of an asset, is to make it "redeemable" against something: to back it against something. As such, the price of the asset will remain in the neighbourhood of the redeemable something. If you can redeem a bitcoin against a Big Mac, bitcoin's price will not deviate a lot from the market value of a Big Mac.
It is the fact that it is not backed by anything, that allows bitcoin to have huge value. Nobody would pay a coin $10 000 if it is redeemable against a Big Mac. It is because it is NOT redeemable against a Big Mac, that paying $10 000 for a coin doesn't sound crazy.