Cryptocurrencies and Blockchain technology has no use whatsoever. It's all made up with fictionary scenarios where any already existing and well-established technology would do just as good or even better.
Don't put that snake oil in my browser, please. Thanks.
Cryptocurrencies have all kinds of uses, people actually use them. From countries with hyperinflation, to ridiculous civil forfeiture, to PayPal freezing large amounts for no reason.
You can find people using anything if you look hard enough.
That doesn't mean those people are representative of something that's (a) useful, (b) an unstoppable trend as opposed to a fad, (c) can't be done better in other ways, (d) not harmful.
I can hold all my assets in one place, which includes holding an ERC20 token that follows the S&P500. I'm essentially holding an ETF outside of a brokerage. I've also been loaning some DAI, ETH and other ERC20's through uniswap, and I hold a bit of BTC through WBTC which is a wrapped ERC20 token that follows Bitcoins price. I do all of this with one asset, ETH. I expect to eventually hold tokenized real estate as well.
There's also a flight insurance app that I've used once. If your flight is delayed, then the contract automatically pays out.
And when I'm bored, I have a bunch of FUN tokens that I picked up for free when it first launched, so I use those to play casino games once in a while. I also loan these tokens out on uniswap.
I'm also involved in MakerDAO governance since I hold some MKR as well as DAOstack which is an infrastructure layer for DAOs.
Last but not least, I use Brave browser and get BAT tokens for browsing. That's mostly everything right now, other than experimenting with other dapps.
Don't put that snake oil in my browser, please. Thanks.