Ever wonder why modern society's religions have no half god offspring of a goddess and a human male [View all]

I thought about that last year and concluded that it's because the goddess would have to be acknowledged as a goddess, would have to stay around humans when it was time to give birth, and the birth would have to be witnessed by humans. She would also have to stick around and raise the half god, half human child part of the time. That's why we see 99 per cent of these so called half god, half human beings raised by the human woman and the god is nowhere to be seen. Heck, no one is even called upon to prove that the god even impregnated her. It is the perfect setup.