Interesting writing. At first I started reading because I need more "regular" German material to read (trying to learn German) and ended up thinking about my native language and Höflichkeit (or Zuvorkommenheit) and how we treat it. I mentioned the synonym because we call it something like "Bringing" (from somewhere).
A polite person is therefore someone that knows how to bring (something good) with him. There is also another synonym directly meaning Education. So politeness is almost equal to being educated.
RE: Warum für mich Höflichkeit etwas Positives ist