I have always found that if I have ingredients on hand I will cook/bake more often. I think it is the same for fabric. If I have a good selection on hand I will make more things. I like to store my fabric on open shelves so I can see it. Out of sight, out of mind. I have a lot of students who tell me they will just buy more fabric because they don't have their fabric all in one place or organized in any manner. That is kind of like telling me you keep the sugar in the bathroom, the flour in the bedroom and the chocolate chips in the family room. Only by organizing what you already have, will you know what you need.
Candy said she keeps large amounts of the fabrics she likes best on hand. I do too. I have been collecting (and using!) batiks since 1990. Sometimes the collection is overwhelming if I look at it all at once, but when I am looking for just a certain kind of green, I'm glad I have what I do.
Mrs. Goodneedle said she had been on a fabric diet because she has a lot of fabric. I think I am in the same category but I will still buy at a good sale. I also think half yard fill ins for the gaps is a good policy and is also good for our mental health. Vicki W mentions seeing too much good stuff in the past few years. I agree there have been some wonderful prints out there, some "have to have" things.
I will post one more time this afternoon with one more quilt top made last year, so til then.........