To play the devil's advocate (haha, or rather, God's advocate), perhaps the best Christian theodicy is based on Romans 13, ie, that God takes absolutely no interest in human affairs but relies on human authorities as his 'agents' and 'servants' to mitigate or eliminate evil and wickedness, and that mankind is slowly learning and improving in this regard after many horrific failures in history. Man is slowly (perhaps) learning history's lessons the hard way.
God has completely stepped back, leaving us to our own devices, out of respect for our right of self-determination and self-rule, much like any parent recognises the right of their grown-up child to make their own decisions about how to conduct their lives, and how modern liberal democracies generally recognise the right of sovereign states to govern themselves without interference from other countries in the absence of aggressive war-like actions towards their neighbours.
This is the complete opposite of the traditional JW theodicy that God is letting time pass to prove that we can't rule ourselves. My little spin on Romans 13 is that God's recognition of humankinds right to rule itself and deal with it's own wickedness is exactly the reason God doesn't intervene.
This doesn't of course address the problem of natural evil, ie, why God would create a planet where cataclysmic natural events like earthquakes and tsunami's kill in vast numbers. And bacteria and viruses have killed more people than any war or earthquake. Obviously to suggest that all this resulted from Adam and Even eating some forbidden fruit 6,000 years ago is utterly absurd.
The problem with my theodicy based on Romans 13 is that it renders God absolutely irrelevant. There is no point in belief in such a totally hidden and non-intervening God. Which is the Buddhist philosophy.
The only motivation then is retaining a residual belief in God out of hope of an after-life and to see one's deceased loved one's again. Ultimately this is the Raison d'être for religion. It's pie in the sky, opium or morphine against the reality of the shortness of our lives and death.