Well, I absolutely agree with all that you just said. But still, knowing what sentences the judge can dole out is important. The problem with mob-rousing stuff such as apostasy... or Frankenstein-monster raising, or being Black, or a Hugonot, or an adulterer, depending on context... is that you could easily be subjected to "mob justice", and there would be impunity for your murderers: Pontius Piwatus keeps his hands cwean, and evewyone is happy (the dead can't compwain).
More importantly, it forces constant, exponential economic growth. Jormungard has to grow faster than he eats himself, or the world collapses.