Maybe you find the theistic response which questions human rationality most troublesome because you find it difficult to formulate a "reasonable" response.
Somehow we don't find it difficult to accept that a dog will never work out a value for Pi or compose a sonnet.
Yet we find it more difficult to accept the possibility that questions of divine being, ultimate existence, purpose and evil, may be beyond human understanding.
Why do we presume that the human mind is equipped to settle such matters one way or another?