In general, I think that we are all aware that this earth and universe, as we know it now, is not the final destination for God's saints and Christ's Kingdom. Meaning, by design, we are not currently living in Paradise nor meant to be. To me, this is clearly a trial period, a time to separate the sheep from the goats, and time to distinguish and gather the flock that belongs to the Shephard.
With that in mind, testing, trials and tribulations are required - why was Adam tempted, for one, to reveal his heart. Similarly, we don't know who are friends are until a crisis occurs. Also, all the disciples were convinced that they would never renounce Christ even unto death, prior to his passion. Evil in this world has been a major catalyst for many to deny God's existence, even though their lives may have been blessed - we see their true colours now, they're making excuses.
But, more philosophically, there is no evil if there is no gauge to determine what's right and wrong. If someone is offended by the catastrophes and atrocities that are in this world, they need to ask why - no other creature gives it a second thought. Dogs and cats don't hold funeral services or offer eulogies for their lost ones, birds don't protest injustices when their food is stolen or babies killed. Man clearly does, even the atheist. Thus, to protest evil, is to admit that there is an over-arching consciousness of justice in all humans - protoplasm and stardust cannot be the source of this awareness and conviction.