I have long thought that there is an argument to be made for the Judeo-Christian teaching of the fall of man quite independent of more direct arguments (such as for the resurrection of Jesus) for Christianity as a whole.
Look at what we know of human beings--man, the "glory, jest, and riddle of the world." Man is (pace those who say bonobos can talk) the only creature on earth able to use natural language, the only creature able to use abstract reasoning. Not only does man have unique abilities, man also has a unique capacity both for good and evil. Some human beings give their entire lives to altruistic endeavors, while others give their entire lives to figuring out how to torment and harm others. The former way of living one's life seems to most of us like a call to our "higher selves," while the latter seems to us twisted, not the way it ought to be, a perversion of human nature.
Where did this being come from, so different from all the other animals? And how does it come about that we have this notion of what human beings should be doing and should be like, that some people seem to fulfill (or come close to fulfilling) this ideal, while in so many ways we also fall short of this ideal?
The traditional Judeo-Christian explanation of these facts is that man was originally made in the image of God. He was specially made and is truly different from all the animals. Moreover, man was made good. Man was made with a human nature that was originally turned or oriented toward God. But there was a catastrophe at a real, historical time, and man fell, and now every human being (with perhaps only one exception--Jesus Christ--or if you are a Catholic the two exceptions of Jesus and his mother Mary) is born with a sin nature. A sin nature, at a minimum, is an innate bent or inclination to sin.
This set of historical claims does quite a good job explaining the data I brought up to begin with. Why does man seem so different from animals? On the traditional Judeo-Christian view, because he is different, and is so intrinsically, and was made so. Why does man have a yearning towards good? Because he was made originally for God and still retains the natural light and the image of God. Why does man inevitably commit evil? Because man fell and now has a sin nature. Why is there such a strong feeling that "it shouldn't be that way"? Because it was not originally meant to be that way, and because man realizes, deep down, that he was not made for evil and destruction.
It is much more difficult to explain these facts if we assume the Judeo-Christian account to be false.
To some extent, then, I think it can be justly said that the "glory, jest, and riddle" argument confirms the Judeo-Christian story of the history of mankind.
But if one accepts full-scale theistic evolution for mankind, one undermines this apologetic point. What I mean by "full-scale" theistic evolution for mankind is that one accepts that, to all appearances, mankind evolved by natural processes from non-human animals, with at least the appearance of full physical evolution. At most, the "full-scale" theistic evolutionist may allow some kind of invisible, indetectable "ensoulment" to have occurred, but for the most part the full-scale TE accepts the Darwinian's emphasis upon continuity between man and animals. I discussed some of this here.
It is highly debatable that the full-scale TE can make any forceful use of the "glory, jest, and riddle" argument I have outlined. For one thing, the whole doctrine of the fall is lessened. As I discussed here, the TE view is that there was never a time when man as a race was immortal. Physical death was a part of not only animal but (given full biological continuity) human fate from the outset. Indeed the very notion of mankind is blurred on the full-scale TE view, giving serious problems to the meaning of the imago dei itself. John H. Walton believes that mankind always killed and committed other acts which we would call "sin" now but that they were not accounted as sin prior to God's "choosing" Adam, because previous hominids were not regarded as accountable.
Insofar as such a view has a place for any sort of "fall" at all, it cannot be a sharp cataclysm followed by a radical change in human nature. It therefore becomes extremely difficult for such a view to make explanatory use of the claim that man was "originally not intended to be this way," that man was made good by God from the outset, and that the evil that man now does is a result of a severe, negative change in what mankind innately is like.
Sometimes those attracted to TE will say that they accept it (not being experts in science, etc.) for apologetic reasons, in order to avoid or remove obstacles to reaching secularists who take the full Darwinian story as gospel.
But such accommodation, ironically, cuts off the TE from using important apologetic resources. The most obvious of these are the resources provided by the empirical, scientific evidence for the intelligent design of nature, since one who is trying to accept as much Darwinian biology as possible must also accept the idea that any activity of God in the realm of biological design is indectable. My argument here is that the attempt to accept TE for apologetic reasons also cuts one off from the apologetic argument from the nature of man (both good and evil) and from the shock and wrongness of evil.
It is not in general a good idea to pursue strategy at the expense of pursuing truth. Often enough, one succeeds at neither. The "strategic" acceptance of theistic evolution is a notable case in point.