Finish it by quilting it. If you just stick it in the closet as UFO it will continue to 'bug' you. There are many ideas of thing you can do with it if you decide, after it is finished, that you don't want to keep it. Unfinished, it is a loss no matter how you think about it. We all make quilts that don't live up to our expectations but others think are just wonderful from their perspective. None of of thinks about UFOs as being wonderful.