https://en.wikipedia.org/wiki/Problem_of_evil
In philosophy of religion, the problem of evil, also known as the problem of suffering, is the philosophical question of how to reconcile the existence of evil and suffering with the notion of an omnipotent, omnibenevolent, and omniscient God.
Philosophers have been considering this one for at least 2300 years.
I'll update this post when they come to a firm conclusion.