Data hoarders could be happy, but otherwise it's mostly enterprise use.

Still, I personally hold about 4 TB of files, and I know people holding over 30 TB.

As soon as your storage needs exceed 1-2 games and a bunch of old photos, demand for space raises quickly.

I have just shy of 8TB of data on my home file server.

That's not including my NVR (for security cameras) which has a single 6TB SATA drive sitting around 40% capacity.

I have 50t of data total : archival, old project, backups, backups of my physical medias, etc

This is an enterprise drive, so it's useful for any usecase where a business needs to store a lot of lightly used data, like historical records that might be accessed infrequently for reporting and therefore shouldn't get be transfered to cold storage.

For a real world example, the business I'm currently contracting at is legally required to retain safety documentation for every machine in every plant they work in. Since the company does contract work in other people's plants that's hundreds of PDFs (many of which are 50+ page scans of paper forms) per plant and hundreds of plants. It all adds up very quickly. We also have a daily log processes where our field workers will log with photographs all of their work every single workday for the customer. Some of these logs contain hundreds of photographs depending on the customer's requirements. These logs are generated every day at every plant so again it adds up to a lot of data being created each month