Some of very first word you use are : "I love to sew. It's relaxing, therapeutic, comforting"
That is what its meant to be, plus enjoyable, fun, happiness, etc.
If you truly want to try a quilt I think finding a pattern that uses alot of larger pieces would be a simple thing to do, but honestly in my mind I see you doing that as an excuse because you think you should use all those scrapes. But then again you don't want to cut them.
Have you considered donating them to perhaps the local quilting club around your town. They usually are always looking for fabric to make quilts for the little children stuck in the hospitals. They also make quilts for our soldiers that are fighting overseas to give them a sense of home. Donating to some such organization would be a wonderful thing for them and you both. Then you could get back to the things you truely enjoy sewing, and start a new stash bag for the others all over again.
I truely hope you find where your sewing heart is leading you. Just never give up on sewing, because I warn you, you will be back : )