Which is why as an atheist I have no issue with emulating George Washington and adding "So Help Me God" for political reasons in court or anywhere else someone asks. It would be much better if they made me affirm rather than swear at God but that is their problem not mine.An oath to God when one does not believe means nothing. No Christian should support forced oaths to God.
If it gives me credibility among the credulous why should I care? I will tell the truth, the whole truth, and nothing but the truth, (but not God's TRUTH™) because it is my responsibility as a citizen to do so.