It really is almost useless, there's not really a way to get useful 3D models out anymore.
It wouldn't surprise me if there are more hobbyist users making STL files for 3D printed parts than all other hobbyist use cases combined. (If you add 2-and-a-half-D CAD/CAM [also still pretty well supported], I'd wager a large sum that it's still useful for more than half the current hobbyist user base.)