I have been rethinking this post. When I first read it I thought the same as many did - "What, there are rules!". However, I am working on a very simple pieced block for a BOM and had to unsew it two times. It made me realize that when we ignore the "rules" - such as cutting accurately, using a consistent width seam, pressing correctly - we do pay the price in lost time taking blocks apart.
I quilt for fun (not profit) so I am not a fanatic about my quilts being perfect, and I often change patterns to make them more "Polly Friendly", but there are some things you just cannot ignore.
I hope everyone keeps quilting at whatever level you are on, learn the rules and ignore them when you want, enjoy the process.