A couple of years ago, I cleaned out my studio so that my grandson could tile the floor. Like you, I was amazed by the sheer quantity of stuff I had accumulated over the years. Secondary hobbies are painting, scrapbooking, hand dyeing fabric so supplies for all this stuff had really mounted up. Then I inherited another quilter's entire stash and now the hoard is bigger than ever. I donate fabric, donate quilts, donate books, etc. but I'm a long way from seeing space on a shelf. Like you, I'll probably never buy another piece of fabric that isn't essential for some specific purpose (backing, usually).