In the Iran of my childhood, “God” took the form of judicial amputations, floggings, scowling ayatollahs and secret police. As I entered pubescence, I was first puzzled, then repelled by the double lives led by people under an Islamist regime. My parents, our friends and relatives - they all had to profess one set of values in public (to keep their heads, naturally) while they lived very different lives behind closed doors. If God required this hypocrisy, then I wanted nothing to do with him.

Source here.