As for me, I quilt for my sanity and my family's health!! I also quilt because of the fabric as I think about the 70s fabric that I worked with in home ec classes and how I wouldn't want much of that fabric in any my quilts today. It is my therapy and my creativeness all rolled in to one thing.
As to the fabric stash per vickig626's post, I probably have over $4000 in stash but the $8000 is high for me because I buy and use only vintage machines (about 40) and I don't have a lot of rulers, templates, thread, etc.