Why is the sin nature inherited?

[Cinjin]

CHOICE! The Tree was put in the Garden as a true repersentation of Choice. That Choice is simple Do we want to be with God and follow His expressed Will or do we wish to be outside His expressed will. Adam chose to be outside of the will of God and subsequently so do the rest of us. True Choice comes in when we chose to return to God's will when we accept Christ as THE attonement sacerfice for our sins! Meaning Christ literaly absolves all sin and all that is left is the choice one makes to return to God or remain seperated from Him.

I mean christ! No wonder Lucifer bailed. He was probably thinking to himself, "wow, this god guy is one seriously delusional asshole and may even have a healthy bi-polar disorder."

Which is the reason for the choice we have been given, for not everyone wants to spend an eternity with God.

And yet you still don't see it do you. You have no problem with this concept of the complete lack of free will - being called "free will."
There is no choice when your only other option ends in eternal torment. You just don't see it do you?