Your moral judgment fails for lack of a broken moral code.
What you established quite clearly is that Jesus NEEDED to come to this world to change it. He did and it changed the course of history. What other man of history so changed world events so much so that we organize our calendars around that event even if we use new nomenclature? Jesus moral teachings changed the world for the better when no one else could. He influenced the morality of our founders.
Where is there another example of a simple carpenter with no political protection changing the course of history? He needed to be more than a carpenter to do so and He was.