I'm going to go ahead and offer a differing opinion regarding Christianity. o_o; First of all, much of the "God is vile and insane" protest can be mitigated by remembering that, if the Christian God exists, then this life is a tiny piece of our entire existence, and that death is far from the worst possible outcome. If you try to justify the Christian God's ethics based on conclusions you've reached by disbelieving in Him, your premises are contradictory.

If you try to justify the Christian God's ethics based on the bible's own assertions of his justice and infallibility, your argument is circular. Conclusions based on belief or disbelief in God are irrelevant to judging his morality according to the portrait painted in holy texts, we already have our own moral toolkit to work with.

I don't see how it remotely mitigates any charges of vileness or insanity to posit that God hands out rewards of eternal bliss or punishments of eternal suffering for beliefs and/or actions without making his expectations clear. That's negligence beyond the scale of criminality. No matter how sure you are that you understand what God wants, if he had actually made his message clear and well evidenced, your beliefs would not be a minority worldwide. Any intelligent and competent human who wanted to get a coherent message across could do better. Hell, scholars have better agreement on what Nietzsche meant, and he was being deliberately obscure.