It is touching and this is an incredibly loving and peaceful conversation. Highest of respect! But I think it is ironic to state you should get rid of your biasis and see the world as it actually is while following a believe system that inherently needs you to believe, not ask why. Im pointing specifically to the "You are a baby in gods world and can't understand the workings that would explain why suffering exsist" - idea. Obviously beautifuly assisted by the notion that the free will of humans is what makes everything worth it (mintute 32 -).,(reply>), I think he answered this question but to clarify that Muslims believe that anyone who suffered in this life will be rewarded in the afterlife like for instance a young child who dies of cancer is rewarded to enter paradise that's how we as Muslims come to terms with suffering and that's why someone who doesn't believe in the afterlife will find it difficult to make sense of why there is suffering as he is  looking for answers that can make sense in this world.