TP, it seems to me that you view the law as being very black and white. In my experience, that is not the case. All kinds of human biases come into play when it comes to interpreting and applying the law, both statue and common law precedent, and always influenced by the facts in each case.
I once heard this great talk by a barrister about a particular Court case. He spoke for an hour and a half about all the precedents and the legal tests you would need to satisfy in order to get a preliminary injunction granted. It was all very complicated. At the end of the talk, the most highly respected senior barrister in this field got up and said "yes, that is all very good, but what it really comes down to is whether the judge likes your client".
Personal biases and different viewpoints play a big part in legal proceedings and also in the application of the law by administrative bodies.