I am so glad to see that I am not alone. When we moved 2 years ago, within a couple of months, I ended up donating to various organizations 9 vans, full of every kind of fabric except my cottons. I still need to get rid of more and have been making quilts like crazy and giving them away. Just not making them fast enough.
The basement is mine and I have floor to ceiling shelving 30 foot long plus a wall that is 14 foot long. Then there is an L shaped room that is full of boxes on 3 sides, that I haven't touched for 2 years. I figured if I havn't touched it, don't remember what is in it, it is time to give away.