I've used torrents to download software so that the provider didn't need to pay bandwidth to share their software.
There are completely legal and reasonable reasons torrenting exists. They're excellent at making huge downloads possible with the more efficient bandwidth. Instead of that, we have an ecosystem of "installers" that exist purely to download massive files to install.
There are many things with technically legal purposes that people often choose not to associate with because they find the cons outweigh the pros. This is that.
There are completely legal and reasonable reasons torrenting exists. They're excellent at making huge downloads possible with the more efficient bandwidth. Instead of that, we have an ecosystem of "installers" that exist purely to download massive files to install.