This is the part I don't get. The universe is a huge place. Plenty of room to let Satan and Adam and Eve have their shot at "being like God" without contaminating "the heavens." All of the angels who want to join in could have done so. Eat from that tree all day, every day if they want to. But why just "dent the bread pan?" Why allow childbearing to take place at all, affecting the lives of so many who haven't got a clue about the "challenge" made in the Garden?
oh, sure, it gives each of us an "opportunity" to take a stand for the rightful ness of God's rule. Free will, etc. Bur mostly the family of man is just an unwilling participant in an ugly experiment.