The first cut is the hardest. I am cutting up a quilt my GM made just for me in the 50s. I used it until it was extremely shabby, then my children used it when they were home sick. I am framing a piece for each of and not worrying about the remainder - if there is any left after doing 6 large pictures. BTW, Grandma was happy I ruined it. She wanted it to be used. I was more protective of the one she made me to replace it and it is in great shape.
Use any parts you can for framing or pillows, pincushions, etc, and then let the rest go. They have served their purpose. Not a popular attitude I know, but it's how I feel.