I use the quilts I'm not wild about to practice my free motion quilting, and I then donate them to various charities. I took some to our local hospital for newborns and babies and have another charity I give them to. If I end up sort of liking a quilt, I give it to a community group to raffle off. But I don't see anything wrong with just throwing them away if they cause you stress. You learned something from the process of making them, and we do throw away school papers and projects, don't we?