Unsewing a Quilt

I have just about had it today. I had pieced and blocked the whole quilt and, with a sense of satisfaction, I laid it out on the floor to look at. Immediately, I could see that something was wrong. I could not figure out what or how it had happened. I managed to botch it but good and have spent about 3 times the amount of time ripping out most of the seams as I did sewing the damn thing. I wonder if other, more seasoned quilters, have quilts that they hate so much.