Ash,
You're looking at the situation incorrectly. Perhaps it's something that can only be accepted on faith. Faulty human logic doesn't work real well. It's not about going to jail/hell, it's about being predisposed towards committing sin, just as the family of an alkie is predisposed to becoming alkies themselves...and all the social and mental problems they have even if they don't become alkies. We, as part of the human race that fell, are predisposed towards sin, and we're quirky.