There is no rational, demonstrable, or defensible reason for a compassionate God to allow any of that. The excuses you will hear for it are either illogical, contradict known facts, or require wildly implausible assumptions for which there is no evidence.
Why would a god allow such suffering in this world? Why are there people with crippling, painful disorders and diseases?
The Atheist Perspective
Can you conceive of any specific thing that, if it happened, would cause you to change your position on the God issue? If so, what is it? If not, then why not?
Who was Cain's wife?
If God has a "divine plan" for everyone, then does that mean he controls humans and animals to meet his plan?
Answers: Atheist, Christian
How is the trinity monotheistic?
Answers: Muslim, Atheist, Christian
Jesus explicitly says "Many will say to ME (Jesus) LORD LORD, on that day... and I will say to them Depart from here ye that work iniquity" Full context Matthew 7:21-23. What is the Christian's response?
Atheist Not the Impossible Faith Richard Carrier Atheist Atheism: A Philosophical Justification Michael Martin Atheist Humanism: A Very Short Introduction Stephen Law Atheist Hitler Homer Bible Christ: The Historical Papers of Richard Carrier 1995-2013 Richard Carrier Atheist Sense and Goodness Without God: A Defense of Metaphysical Naturalism Richard Carrier Atheist Why I Am Not a Christian: Four Conclusive Reasons to Reject the Faith Richard Carrier Atheist The End of Faith: Religion, Terror, and the Future of Reason Sam Harris Atheist God Is Not Great: How Religion Poisons Everything Christopher Hitchens