I don't think it's hoarding, although there are some aspects in common with hoarding. I buy with the purpose of using the fabric. Sometimes stash increases, sometimes it decreases. Sometimes I feel like quilting, sometimes I don't. Mine got out of control after a basement flood, followed by our boat sinking. Everything on the boat had to be washed, and everything that contacted the flood waters in the basement had to be washed, fabric had to be ironed. I didn't take new purchases to the basement, and I'm slowly organizing it mostly in the garage (so no car in there till I'm done). Then I've been really sick, so that slows stuff down. I've had trouble finding my UFO's, but I've finally found almost all of them, including a few I'd forgotten about. I started working on Christmas runners and discovered why I set it aside. But I've tried not to buy anything until I use a good portion of my stash.