I have fabrics from my grandmother, mother, and me (I'm nearly 80). I consider all of it usable unless it is damaged in some way. Mine has been carted around for so many years, yet I dip into it often, rummaging for that particular fabric I need. Maniac, I love your reasoning! And, guess what, calicoes are coming around again, so all things old are new again. Happy quilting, all.