@AstroChuck: I’ll bite. The UU church has evolved a great deal since the days when it could be considered a Christian religion. I think the most important change was the merging of Unitarians and Universalists. At that point, the church was effectively no longer Christian, I would argue.
Many UUs believe in God, god, goddesses, or gods. Many don’t believe in any of these things. Belief in a higher power and/or an afterlife is not considered a teaching of the church. All of these philosophies are welcome under the umbrella of the UU religion, but congregants are not asked to embrace or deny of these things.
So I think this begs the question of, “if there’s no chosen deity or afterlife, in what respect is it a church?” And that is a separate and important question unto itself. The only creed or dogma the UU church genuinely expects people to adhere to is the Seven Principles, which I hope you will forgive me for reproducing here:
“We, the member congregations of the Unitarian Universalist Association, covenant to affirm and promote
* The inherent worth and dignity of every person;
* Justice, equity and compassion in human relations;
* Acceptance of one another and encouragement to spiritual growth in our congregations;
* A free and responsible search for truth and meaning;
* The right of conscience and the use of the democratic process within our congregations and in society at large;
* The goal of world community with peace, liberty and justice for all;
* Respect for the interdependent web of all existence of which we are a part.”