The twentieth century is now history, and as we inch farther into the early decades of the twenty-first century, it is becoming readily apparent that modern people have not only forgotten God, but have also forgotten about the existence of metaphysical evil.
Failing to remember God renders life meaningless. Losing sight of metaphysical evil casts people into utter bewilderment and confusion, especially in times of 'crisis'.
Don't believe me? Stop and take a look around.
Note added: By metaphysical evil, I am not specifically referring to Leibniz's conception, which Voltaire roundly criticized, but rather to the existence of supernatural evil that is unrepentantly and purposefully opposed to God's will and creation. In light of this, supernatural evil may have been a better choice than metaphysical evil. Supernatural evil works to turn people against God's will and creation for the purpose of soul damnation. Modern people find the existence of such forces laughable and tend to callously dismiss any notion of evil operating at the supernatural level, which helps to explain why they rarely recognize true evil and even more rarely manage to 'make sense' of it whenever they do detect it or become aware of it.