I just got a XP-Pen Artist 12 Pro
digital drawing tablet with screen 12" . It's just great playing round with Corel Draw software .
If you are a graphic designer or digital artist working with a tablet is more efficient and comfortable than a mouse, especially when you use it for longer period of time. You can make illustrations and vector art in software like illustrator or digital paintings in photoshop.
They are also used for making 3D sculpted models in softwares like zbrush and blender…
Other than that there are many other uses…like if you make educational tutorials than you can use the tablet to write handwritten notes.
In office they are used for taking digital signatures.