While it's true that BitTorrent as a protocol has significantly fallen out of favor as the go-to technology for John Q. Pirate's needs, there are still many niche torrent sites that stay alive by differentiating on quality and community.
Most of these sites are invite-only, and each tend to specialize in a specific type of media. One site might accept only movies, another TV shows, a third comic book scans, and a fourth might be the go-to repository for textbooks and e-learning materials. Not all that into blockbuster movies? Just join a tracker that specializes in older and more obscure films.
On many of these sites, the material uploaded often includes many more choices in format and quality than is commercially available. A movie, for instance, might offer the option to download a 1080p encode in various video and container formats, or even a full bit-for-bit rip of the BluRay disc. This level of detail and dedication to the pirate media also tends to spin up a community within the site. After all, the people who dig through bargain bins of comic books to scan and upload them (or who scan the big Marvel/DC releases each week) are probably a lot more interested in sticking around and discussing their favorite comics than the drive-by downloader who is only interested in getting his hands on the latest Walking Dead issue.
It's an interesting ecosystem, and while commercial products have caught up greatly on the convenience side I think there is a way to go still on baking in quality, variety, and community.