The Problem of Evil

Some claim that only the intellectually defective can fail to be impressed by the inconsistency between belief in the existence of the theistic God and the recognition of suffering in our world – especially given the quantity and intensity of human suffering. An omniscient, omnipotent, omni-benevolent God would not allow his beloved children to suffer, and certainly not as often or as intensely as they do. A good God would not permit evils to relentlessly afflict human life within His creation. The ubiquity of suffering renders belief in the perfect God of theism irrational. So say anti-theistic proponents of the problem of evil...more here