You’re welcome 
The 3D cursor is a useful tool for sure. You can do quite a few good things with it. See the snapping panel. You can also rotate around this cursor instead of the selected object. But it does not need to be visible all the time. For me it’s also in the way very often. That’s why i made it hidable as one of the first actions.
The good news is, in Blender 2.8 you can finally hide it too.