want to try and point out the source of the controversy as I understand it. That matter is really one of a theological/philosophical matter, whether that is something recognized by the typical young earth creationist fundegelical Christian.
It is good that you recognize that the heart of your concern is really a theological/philosophical matter. That means it is not really about evolution. And this is the normal case when people have concerns about evolution and Christianity. It turns out that their concern is not really about evolution, but about some theological/philosophical matter. The real question then is "Does science in general or evolution in particular really say anything about this theological/philosophical matter?" In most cases, the answer is "No".
I have found that Darwin's theory is argued against on a purely scientific playing field,
Not successfully. Most alleged scientific objections to the theory of evolution have been dealt with by real science. You can check many of them out on talkorigins Index to Creationist Claims. If there are one or two that you think are particularly forceful raise them here and I am sure someone will be able to explain them. (btw I am assuming you do not mean Darwin's original theory. That did have some real scientific problems, especially as he had a totally incorrect view of heredity.)
most people forget that true science is never absolute. Good science never promises or speaks in exclusively absolute terms ex. "This ball will fall every time I drop it." That would be bad science. What it seems to come down to when the "scientific" argument occurs is that most theories can be interpreted in many different fashions and appear to be reality.
That is not really the case. Most science cannot be interpreted in many different fashions. Don't confuse a limiting case with a different interpretation. "This ball will fall every time I drop it." is absolutely true as long as gravity is a property of physical existence and the ball and I are in a gravitational field. The only occasion on which it would not fall is if we are in the zero gravity of space. That is not a different interpretation. It depends on the same understanding of physics both on earth (or any other body of massive gravity) and in space. It recognizes that the same physical properties are being expressed in different circumstances with different results.
What concerns me is not the scientific dialogue on the subject, but the philosophical root. Darwin's theory was developed at a moment in History when humanism and atheism were really becoming quite popular or mainstream. Nietzsche lived practically at the same time. So what concerns me more about the issue is that it was an action in a sense driven by a desire to replace God, to kill Him if you will. So I see it as a theory born from a nihilist mindset, and frankly nihilism is diametrically oppose to Christianity.
So I guess what I am really trying to figure out is how does a Christian reconcile a nihilistic idea to Christianity. How is meaning and person-hood brought into an idea that was and still is used to oppose these things?
A scientific theory in and of itself is judged by how well it explains observations. It wouldn't matter at all if Darwin was a nihilist (he wasn't, not even after he lost his faith); his science could still be correct. Just because a person has some beliefs we don't agree with doesn't make them wrong about everything. For example, algebra was invented by Muslims, and geometry by pagan Greeks. Does that mean a Christian cannot properly study them?
No, of course, we cannot reconcile a nihilistic idea with Christianity. But evolution as science is not nihilistic just because Nietzsche was. The only question relevant to evolution is whether it is good science. Christians can always accept good science whatever the beliefs of those who discovered it. Science, after all, is a discipline of discovering what is true about created reality. Whether such a discovery is made by a Christian or a non-Christian is irrelevant, since in the course of things it will not gain standing in the scientific community if it does not work for all scientists whatever their beliefs.
To sum up, the point is not what mind-set gave rise to the idea of evolution, but whether evolution works as science. Does it actually make sense of what we observe? Is it actually supported by the evidence? Does it correctly predict what we will observe? And does it do so equally for every observer regardless of personal mind-set? If the answer to these questions is "yes" (and it is) then evolution is a genuine insight into what is true about created reality, no matter where it originally came from.
Please forgive me, I am sure that I am annoying you all, but this is something that I am having a lot of trouble understanding, and I think that this topic is something one must have a handle on.
Actually, it is a delight to get serious questions from a person who is really thinking about these issues.