Even this Christian can easily come up with a defense for that one...perhaps the fact that they survive and thrive in a desert (Saudi Arabia, which incidentally is the location of Mecca and where the Islamic prophet Mohammed was to have had a major spiritual experience, is also one of the richest nations in the world, and certainly more rich than the heavily Christian Mexico--which is also a desert) suggests that God is on their side, would it not?
Islam is worthy, and I am the blessed one who was given the opportunity to follow it. You do not like it? Oh well, do I care? Not really. You do not want to follow it? That's my issue why? If you are not secure in yourself that you need to put others down does that not just say volumes about you and nothing about those you attempt to mock?