Then there is the whole other argument as to whether Satan actually lied to Eve about the consequences of eating the fruit.
Their eyes were opened and they came to a knowledge of good and bad. They would have continued to live if they ate from the tree of life, according to the bible.
Did Satan know God was going to restrict access to the tree of life, or was that a curve ball thrown by God that no one expected?
Also, why have a tree of life????