Bitcoin seemed like such a good idea - with a few obvious problems, which may or may not have been solveable (eg preventing tax evasion). In the good ol' days, it was a replacement currency which could not be controlled by corrupt governments.
And then - like everything from fiat currencies to houses - it was corrupted by investors and venture capitalists. Starting with Etherium, what began as a form of fully-democratic money, almost a digital version of a pre-market barter economy, became instead yet another investment opportunity, creating bubbles and speculation which is ruining (has ruined?) it for the ordinary folks it was intended for.
In response to the frequent news headline "Should I invest in cryptocurrency", I offer the answer: NO. It is a currency, not an investment. Its purpose is for interpersonal trade, not speculative profit. "The Markets" have no business getting their corrupt, grubby paws on it.
But people have said that about houses for decades now - they should be homes, not investments - and nobody has taken any notice. I don't hold out much hope.