Is "God" mostly a rhetorical tool for society?

The concept of "God" may actually serve a low-level social function above all else.
It's to answer so called "shit test" questions. These are very complicated questions that would require a lot of wasted effort to answer and would just cause frustration.
Like why didn't you have more children? Why is your nose so big? Why don't you have more money?
The reason: it was all God's will.
Even Scientologists could use this useful tool, if they believe in the "Eight Dynamic".