I have quite a large stash and wish I didn't! It would be more fun for me now to buy new fabrics for a quilt. Storage and maintenance of a stash can become burdensome, and fabric is something that usually does not appreciate in value over time. Unless you are buying designer fabrics, fabric automatically becomes worth only half what you paid for it. I have seen quilter estate sales where fabric is sold pennies on the pound.
A stash can be a creative resource for some quilters, but for many of us it becomes something of an albatross.