Torrenting requires way more resources than people realize. It’s easy to look at your torrents’ download speeds and think “oh, that’s less than a normal download, like from Steam, so it must not take nearly as many resources” – it’s not all about bandwidth. The amount of encryption and hashing involved in torrenting is fairly CPU heavy (every ~4 MB piece has to be hashed and verified), especially if your CPU doesn’t have onboard encryption hardware (think mobile devices). The sheer number of connections involved even in just one torrent can also bog down a network like you wouldn’t believe – anyone who runs a home seedbox can attest.

Most clients are web browsers and support for torrents in http is the same as for every other file.

So that would only give us a use for torrents as a form of content distribution plattform to get the actual files closer to the client.

In cases where we have actual non browser clients: i like to curate what i am distributing and don’t want to distribute anything i happen stumble upon or would you be willing to store and more importantly share everything you find on 4chan or that might show up in your mastodon feed?

Authentication and authorization can not be handled centrally if the host performing the actual action you want to apply those to can not be trusted.

Media sharing is mainly a legal problem. With decentralized solutions you couldn’t easily delete illegal content and anyone hosting it would potentially be legally liable.