"you think something so complicated as life comes with a manual on how to get the most of it? That is our vision of what G-d given rules are, the owner's manual to the world."

Oh my god, I hope not!   As far as I can tell, all these books of scripture were written by human beings - none of whom were perfect.   

I would like to think that if there is a god, he or she would not be so confusing if he or she wanted to give us rules to follow. All this interpretation and misinterpretation has led to wars and strife.

I would hope that individuals find their own individual paths, and follow whatever set of rules they choose.