Fortunately, I love scrap quilts - Bonnie Hunter's (quiltville.com) are my favorite patterns. Over the years, I've collected a decent, but not frightening, stash. Now I can make quilts mainly using that fabric, with a few new fat quarters or half yard cuts thrown in if I want. A good friend used to shake her head when we went shopping; she only bought exactly what she needed for a given project, where I was buying b/c I loved something.
My shopping habits have changed... Rarely do I buy more than 1/2 yard cuts (again, b/c I love the scrappy look). And I'm always looking for a sale - whether @ LQS or on line. Plus, I do look at this as a bit of an investment for the days when I am not able to shop as much - whether it is due to economics or having DH w/ me every minute! (Sorry, couldn't resist - we are on vacation and I can't seem to get a second alone. He even has to go to the grocery store with me. What will retirement bring??)