Seriously, though...this whole idea that we don't need a God because we would rather do it ourselves is part of what makes sin sin.
I do not understand this statement. Please elaborate.
I would like your opinion on how the notion of sin differs from the notion of crime.
Personally, I like the Heinlein passage quoted upthread. Many of the sins listed in religions seem to me to be designed to produce fear and guilt, and therefore obedience. The rest seem obvious for people living in societies.