I believe that every human has the ability to draw, some people develop more for more time, but deep down we all can draw.
So, imagine all the people drew what they dreamed last night, drew the monster closet, or even their imaginary friends. Something they saw and they could not share with anyone else. Then these people come together and show each other their dreams, their friends, their monsters ... Whatever, their vision.
For me, this is the largest illustrator function: Show to the others something they could never see, something that is stuck inside our minds which only the drawing is able to externalize.
Therefore ... I am not a lover of mere demonstration of technique ... I am a lover of the expression. Express yourself, fearless.