@Draugnar,
So you're saying Constitutionally mandated Criminal Procedure is "stupid"?!? You're wrong, criminal law is about damaged parties as well. I mentioned before a merger between criminal and equity that occurred in the 1930's.
Let's say, for the sake of illustrating this point, that you and meet and play a face-to-face Diplomacy game, you get mad at me because I stabbed and you punch me in the head. We're playing at a coffee shop, and the owner calls the cops. When they arrive, they take our statements, but we have since made our peace, and I tell the cops that I am not interested in "pressing charges".
In the traditional common law jurisdiction, the matter would end right there -- the damaged party is refusing to press charges. However, today, the police could still arrest, charge, and prosecute you for assault regardless of whether or not I pressed charges. It would be State of X, or City of X vs. Draugner. Why is that?!? Is the State or the City damaged by you actions? Was this the same way that things worked in 1900? The State has abrogated the right of claim of the people, and traffic laws are the most common example of where this plays out. Something happened, do you know what it was?