10 reasons why artists should draw more:

To learn to see.
To inspire the design.
To record the geometric shapes and patterns of the composition
To organize the composition into 4 values or less for a strong design.
To problem solve and analyze. Fixing the problems with a pencil is easier than with paint.
To save time and spend more time painting and less time problem solving.
To improve your art – build stronger skills and better paintings.
To help build an agenda for executing your painting.
To learn artistic dexterity and eye-hand coordination.
To help your memory. Drawing helps with short-term memory and ideas that might otherwise be forgotten.