Comics give to the artist a very interesting field of exploration and research. Everything is possible. You can be very small or very big or very modest or very ambitious. You can stay in a regular style like everybody, or you can escape and be completely unusual and incredible. You can give more to the world, more to the drawing. Everything.
Jean Giraud (aka Moebius) on why he turned to drawing comics as a young man, from the documentary The Masters of Comic Book Art (was on YouTube but got yanked, VHS might be the only option at present?), as quoted in his NYTimes obit.