I think it depends on what kind of quilts YOU like to make. If you like a unified design, then perhaps keeping all those scraps for a quilt is not to your liking, and it would help you to find them a new home. I think with the scraps of several quilts, you'd be making scrap quilts for quite some time. But if you like to make a scrap quilt and think its a valuable use of your time, then by all means keep them. I LOVE a scrap quilt, but very rarely make one. I find new homes for my scraps, because I know someone will be more excited to make a scrap quilt than I will.