I have the impression that most comments here are either biased against cryptocurrencies or trying to push for them blindly. That's a bit sad considering we should at least be discussing the technology here. web3 is a marketing brand that defines a future version of web apps where the frontend is a compiled SPA possibly hosted on decentralised platforms (IPFS) and where the backend is a decentralised blockchain (and…
And this is where the assumption is wrong. Web3 is about gatekeeping for profit, and additionally you not only have to trust a single vendor...but literally every other peer on the decentralized internet to be trustworthy with your data.
Computational security is not the same as data security, and this is where the marketing BS is happening.
As long as there's no permission management and no deletion feature built into the blockchain, your precious private data is as publicly accessible as it never was before.
You think encryption will hold forever? SHA might disagree.
You think 20 years ahead of time the password will still be secure and not leaked anywhere else? Ha, good luck.
The problem that I have with web3 is that 99% are ponzi schemes for gatekeeping ...and the 1% that are left try to market it as a privacy thing, which it cannot be by definition of how a blockchain works.
There are so many broken software programs out there already, and now we made those bugs persistent and unfixable for eternity (with respect to "how secure" user data is stored).
If the web3 would be about real distribution (not the same as decentralization), there could be much much easier solutions for having a local copy of your old myspace photos.