What has really slowed me down on stashing, is washing, ironing and folding all of my fabrics to get them in order. I had accumulated enough that they needed some sort of organization system in order to be seen and be useful. I got 200 of the comic book boards (because I couldn't afford to invest in anything better) and have begun folding my fabrics into little 'bolts' on the boards, and organizing by colors/themes. It's taking forever! I am nearly done now, and the whole process makes me really think twice about adding to the stash.
Having some sort of stash is a feeling of security for a quilter. No matter what happens with income and the economy, I can quilt!
I am also a knitter and have a big closet full of yarns. Recently I sold off a lot of it that I no longer wanted to use, but I still have lots of knitting security left!