I, too, am glad there is separation between church and state. The two, along with the family, have their own spheres of operation or "jurisdiction." The problems arise when one acts to poach into the domain of one or more of the others. For example, the church shouldn't go to war. That's how we got the Crusades- a huge wrong which set back the cause of Christ for centuries. War is the province of the state.
"Separation", however, is misused and construed by those who hate God in a way which causes the establishment clause to gobble up the free exercise clause. This is not what the framers intended and it should be resisted.
The separation of church and state is indeed a thing to be glad of, and proud of as Americans. George Washington said...
The Citizens of the United States of America have a right to applaud themselves for giving to Mankind examples of an enlarged and liberal policy: a policy worthy of imitation. All possess alike liberty of conscience and immunities of citizenship. It is now no more that toleration is spoken of, as if it was by the indulgence of one class of people that another enjoyed the exercise of their inherent natural rights. For happily the Government of the United States, which gives to bigotry no sanction, to persecution no assistance, requires only that they who live under its protection, should demean themselves as good citizens.