If you think that you would be better off in a world where there were no separation of Church and State, this is a useful graphic. The National Post has put up a breakdown of the world’s major religions. It is by no means exhaustive, and it provides the misleading impression that large groups like “Catholics” and “Orthodox” Christianities or “Hinduistic” Eastern religions are coherent and homogeneous. They are not, by any stretch of the imagination, and have hundreds upon hundreds of subdivisions, sects and partitions, each with their own sets of contradictory (sometimes opposing) beliefs.
Remember: no matter what religion you believe in, the vast majority of people in the world think you are wrong. Don’t assume that if we remove the wall of separation between Church and State that it will be your religion that everyone agrees to impose on the rest of the population; you may end up with a set of laws that force you to follow the religious law of a group with which you don’t especially agree. This is why the Establishment Clause (“Congress shall make no law respecting an establishment of religion…”) together with the Free Exercise Clause (“… or prohibiting the free exercise thereof”) are SO critical your YOUR religious freedom. It is up to you and I, no matter what our personal beliefs, to ensure that this separation continues.