After 45 years quilting, I still haven't got there yet!
No matter how much fabric I have in my stash, it seems I always need something, either the color isn't exactly right or the print is too busy. So I end up with another purchase to add.
I do try to whittle down fabrics, styles change, colors change, patterns change. I make scrappy quilts with the fabrics that I see are no longer in style.