It's like having access to a completely deregulated bank ran by the mafia that has an API anyone can use. I think there's use cases for that, though maybe not the ones the community usually mentions.
Same with the bank. I don't think I ever had to speak to my bank in the 8 years I've been with them, or even been to their branch for that matter. You do everything online or in the app.
Even the word technophile has positive connotations as opposed to something deviant in our society. We don't even have a word for a deviant technophile , deviant over obsession with nonsense and "the next big thing".
By now you can also do things that benefit from the network effect of crypto enthusiasts, for example, you can sell JPEGs from a no-name artist for significant amounts of money, which would historically be difficult for outsider-art, regardless of the fact that you're not even selling the actual rights to the images. It also proved to be an interesting way to speculate on internet memes.
There's millions of people using this ecosystem, even if it ends up being overall net negative for the world and a temporary technological distraction, I think one should be able to neutrally assess what it's being used for. You may not like it but it's like saying a nuclear bomb has no use. You may not like what it's being used for, and it may be immoral or illegal, but to say there's no uses when clearly millions are engaging with it and doing "stuff", seems short-sighted for the purposes of discussion.
So it's only good for circumventing crippling social phobia? How many people suffer from those? And, hey, I've been using non-Blockchain-based online banking since around the turn of the century; can't recall when I last spoke to a bank teller, but it must have been well over a decade ago[1]. So even that use case is adequately solved without Blockchain.
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[1]: Except for buying some foreign cash before going on vacation, that may have been in 2012. Do the clerks at Forex count as bank tellers?