The invented gods have the appearance of benevolence till they are examined. They serve to comfort us and keep the boggy man from the door. We invented ethics like we invented these gods. God is here to serve our fear of death. As he grows less benevolent we try to attain a more moral value to our lives without the fear of eternal retribution. We cant blame him or praise him, for he is our invention.
The trinity is part and parcel of that invention. We attempt at restructuring the concepts to hide our silly inventions.
As much as I respect your boldness, which I certainly relate to, I think this is a reductionist view of religious myth.
Just as the genitals are also the organs of excretion, so religion also does a double duty. Think of Michelangelo, Bach, Raphael, Romanticism in general - including Nietzsche. All were inspired by Christian myth.
Fichte conceived God as a moral-world-ordering. God as a suprasensible force. This reminds me of Jung. God as a motive energy toward the ideal. And this ideal is flexible. It can call itself anti-christ or scientist. It's the energy in us that does not seek food or sex, etc....