Can someone actually explain what the intrinsic use of coins is supposed to be (aside from speculating). Their value is so volatile they suck as actual currency, not to mention if you were the guy that spent 10,000 bitcoins on a pizza back in the day you'd feel pretty stupid about your 300 million dollar pizza. They're not even particularly good for illegal purchases -- you have to know what you're doing to keep your blockchain transactions actually anonymous.
Besides the uselessness, let's not ignore the awful downsides. They're a huge boon for randsomeware. Oh and they're an environmental disaster.
Frankly I'm not really sad to see this stuff collapse, because when you get rid of speculation there's not much good about crypto.
I do think we need some sort of crypto currency in the future. I believe in the _idea_ of it. But the current implementation is ridiculous and awful. It needs to function as an actual currency, that you would be willing to spend, not as some sort of incomprehensible "investment" vehicle.