It is true that when you start from a spiritual view of life, the manifest horrors of existence and the persistence of human (and animal) suffering have prompted innumerable explanatory attempts by varying theologians (the Book of Job is one such attempt, the dualism of Gnosticism another).
However, a materialist view does not have quite such problems - shit happens, and beauty and goodness also exist. Admittedly, the origins of the aesthetic sense in humans is a complicated matter to explain, and I have my problems understanding talk of feed-back loops between the pre-frontal cortex and the basal ganglia
Yes, it would be interesting to tabulate the different explanations of the 'manifest horrors'. I think some theists argue that God is in charge of all of it, including the horrors. My memory is that many Muslims believe this, and some Christians - so for example, 9/11 was commanded by God to punish non-believers.
Then you get a sort of half-way house, where God is in charge, but evil raises its ugly head. This becomes quite confusing, as God is in charge, but sort of, isn't. The usual escape hatch here is free will.
Deism represents a God who doesn't intervene in any case.
And there is the old response, I don't know.
Yet you sense that the logic of omnipotence and omniscience has to be skirted round by many theists, along the coulda, woulda, shoulda principle. God could cure babies with brain cancer, couldn't he?