"I would still like to have that luxury, to be able to just sit and draw for hours and hours and hours. In a way, that's what I do as a writer"

Amy Tan is expressing her desire to have the luxury of having the ability to sit and draw for hours and hours. She is indicating that composing is a type of art, which it needs the very same level of devotion and focus as illustration. She is suggesting that composing is an innovative procedure, which it requires the very same level of commitment and attention to detail as illustration. She is also implying that writing is a form of self-expression, and that it can be a kind of treatment and a method to reveal one's ideas and feelings. By expressing her desire to have the luxury of having the ability to sit and draw for hours and hours, Amy Tan is conveying her gratitude for the creative process of composing and her understanding of its value.