I defy anyone to name me one Christian sin that someone can do for very long without having life threatening circumstances occur. As Jesus said, the wages of sin are death. Its as simple as that. Morality is established by loving parents and grandparents to help us live long, happy, successful lives, while bringing the next generation into the world and training them to also live long, happy lives. You can only be a hedonist so long, before you will regret it.