I've stopped buying fabric, too, even though I'm sure I have much less than many quilters...and many on this board. I've realized that having too much fabric depresses me; I feel like I'm not working fast enough to turn it into something, and that takes all the fun out of what is essentially, for me, anyway, a hobby and pastime.
Besides storing the stuff gets to be a nightmare if you don't have a dedicated sewing room....which I don't.