There are two powers in society and that is politics and religion. These two institutions should be mutually exclusive but they are not. Religion tends to bleed into politics and this is unfair to the major portion of citizens. It is unfair because it tends to draw on a singular vein of faith and this is unfair to the multitude and systems around.
Non religious and religious bodies should maintain their own interest and society as a fairness should be secular.
Secularism can be a far more balanced system because it does not take its dictates from a deity but rather from the people.