So a great deal of the cryptocurrency space is admittedly hype, laundering, and oftentimes the wrong tool for the job. I'm a believer in the technology and I think it could do a lot of good for mankind. Average folks don't understand that it isn't just about money. Blockchains are records that are replicated globally and can't be altered. Here is an example(a little cheesy) of a message stored on a blockchain.
https://cardanowall.com/en/message/79f30d7eb536fbc4c69fceb7194b87be0dbe918ada997e6ab6b0b32e81bca061
It could, in theory, be around for ages.