Well, people like me don't think they'll use it up, not really. I have a lot of fabric and have come to realize that quilting is my excuse for buying fabric. It gives me pleasure to go through the process of purchasing it, than being able to look through it. The "looking through it" has sparked creativity for more than one quilt.
Even so, I know I have to cut down buying or give some away. The giving it away to the guilds I belong to is happening, and I've seen some very cute quilts made for charity from the donated fabric.