These are always fun tidbits to have during a religious conversation. I only have a few, please feel free to add any that you have.
Reproduction: Why send millions of soldiers to do the job that only one is needed for?
Human Body: Fragile, very hard to repair, cannot live without water or food. We are also very slow on foot, compared to most other animals.
Construction: I think that any natural disaster is evidence that god doesnt exist. Why build a planet to house your children, and let them die when your creation malfunctions.....