"The science of design, or of line-drawing, if you like to use this term, is the source and very essence of painting, sculpture, architecture... Sometimes... it seems to me that... all the works of the human brain and hand are either design itself or a branch of that art." - Michelangelo
Drawing is a communication tool and indispensable skill which helps condition the mind to visualize abstract ideas, concepts, emotions, designs and paradigms. Something to remember.