I have followed various answers to the Problem of Evil, and have found them convincing to various degrees, but one nagging question remains in the back of my mind. Why are we here at all? Why did God create this universe and place us in it, instead of creating us directly into heaven, as he apparently did with the angels? I have heard the argument that we are placed here to exercise our free will, but apparently the angels have free will as well (e.g. satan's rebellion). So why did God place us here to suffer natural disasters, illness, and death, when his angelic creations apparently aren't faced with this sufferring? Any thoughts?