This is the question as posed by Counter Apologist. The question is basically this: if we will get to the point where we don’t sin any more as a precondition for entering heaven, then why didn’t God just create us at the point in our history where we would not sin and get heaven started thereby bypassing altogether this great and terrible prelude that we call life in a fallen world?
I would think the answer, so far as it is accessible by finite human minds, must lie in this: that there is intrinsic value in undergoing the personal history that brings you to a particular place or makes you into a particular kind of person which is simply not retained by creating the end product without the intervening history.
To wit, there once was a hiker who came to a great mountain. And there at the base of the mountain was a helicopter with a pilot offering him a free ride to the top. “Come on gent!” he said, “Ride with me and you’ll be on top of the world in no time at all.”
“Yes,” said the hiker, “that is true. But I stand here as much to climb to the top of the mountain as to stand on the top. And so I cannot have the latter without the former.”