Why do some think it's Politically correct to be "One Nation Under God" meaning we have to have religion?

"It's not Freedom From Religion" but "Freedom of Religion" It is my opinion the Founders could care less if we prayed to Baal as long as we abide by the Law. Religious Intolerance always borders on Fanaticism and that leads to some Zealot Modern Day Prophet preaching he has the ear of God i.e.Pat Robertson