[Knork-and-Fife]

This is like asking why would anyone need more than a standard 110v North American electrical outlet in their home? Why would you ever install a higher capacity 220v socket somewhere?

Because it's a utility and there's a wide world of use cases out there.

For electrical maybe someone wants to charge an electric car fully overnight, or use a welder in their garage. Or use some big appliance in their kitchen.

For Internet maybe they make videos, games or other types of data-heavy content and need to be able to upload and download it.