Painting and sketching are the ways to express yourself. For some people it is their obsession, for others it is a way to relax their minds. While others consider it a way to make a connection with their inner-self. In any case sketching and painting are something intricate yet soothing and fascinating.
I believe that to display your art you do not have to be a great artist. You just have to draw you emotion and personality on paper.
Creating something with your hobby makes yourself relaxed. I believe that it is a kind of therapy. You don't think so much when you are painting or sketching. Because you have to focus on if you want to make an art.