For us (as 3D artists) would be ,oftentimes,useful to know how to use a 2D drawing program as well.The uses of a drawing program are many : creating logos,creating geometric shapes (we could then import in the 3D program and manipulate them as 3D objects) even creating textures
In this video tutorial I'm giving an example of how useful this knowledge can be by modelling a motorbike tire in Blender whose part of its geometry has been 'drawn' using Inkscape free drawing suite