This just illustrates the vagueness of religion. These people do not actually believe in this stuff. If they did, like Hoori said, if they were actually living in fear of punishment from god, they would damn right follow his stupid rules, just to get him off his back. But they don't. They say they do, but their behavior doesn't reflect their supposed beliefs. The beliefs are for show.
And this applies to at least half of all religious people in the world. They identify themselves with the belief, they say they belong to the religion, they tell themselves this, but in actual fact they don't actually have the behavior that reflects the belief. Which means that if it wasn't for social pressures they'd easily toss it.