No doubt someone was thrilled to receive your bags of scraps. Be happy that you "made my day" for another quilter, & do not dwell on what you might have done w/ the scraps yourself. Just appreciate you now have more room in your closet. If you get enough to PIF again, maybe label the bags "quilting scraps" in big letters for the Goodwill so thgey will be sure to pass them on as you intend.
Nice of you to think of other quilters in cleaning out your closet - I use scraps all the time for donation quilts to a children's home & am blessed every time I find a bag of scraps.