DO NOT give up quilting. You did a wonderful job. I have been quilting for several years and I am very impressed with your FMQ. My Mother would have been similar except she would have pointed out every mismatched seam and every cut off point.
Come out and ask your Dad if he liked it or not. If he doesn't care for it then I am sure some wounded sailor would love it. It would make a wonderful Quilt of Valor.