*God did not lead this post*
As for scientific arguments vs. God.
Timmah!, is absolutely correct in his points. Every belief that has no absolute bound requires some sort of faith/trust. There is nothing purely factual that disproves or proves the existence of God and to say so is an admission of some level or amount of ignorance.
Another take:
Those who have felt God before and can hear God when He speaks to them could never deny completely that He exists because that feeling or memory is real to them. It is only those that have never opened themselves to this as stated in my last post, who completely denounce the existence of God, which should actually be obvious.
An even further take (can get dangerous in here):
We only know things exist through how we interact and input them. If you were to take away your sense of touch, sight, sound, taste, smell then you would not be able to tell that most things exist. To you, almost nothing would exist.
There is a 6th sense though that is not as easily documented and you cannot discover it through a "thought process." This sense is more spiritual and sensing. It is an invisible force that radiates around things and moves into places that we cannot see or factually document. I know this sounds "science fiction" but if you have ever been caught up in a classical music piece, sunset, movie, or prayer then you have had a taste of this sense. It extends beyond these more inward responses though. This sense helps you detect if someone is in a room, if there is danger present, if someone is angry or if a mood is happy. It's the chills you feel when you think your mom is in the room though she has been dead for years, the dread you feel just before your child miles away has a car wreck, the dreams you have that come true weeks later, the feeling of deja-vu when something seems so familiar or like it was meant to be. All of these feelings are rooted in this same sense. People who indulge in this sense are usually considered "artistic," "clairvoyant," "in-tune," "empath," "enlightened," "spiritual," even "emotional" and those who are EXTREMELY influenced are sometimes dubbed "insane."
The problem with this sense is that analytical minds normally refuse to experience or cannot easily experience this sense and completely ignore it, but for others this sense is too real to ignore. This sense is where hope, human spirit, fear, and courage can come from and we all possess these things but for those that have conditioned themselves to push it to such minimal levels, there is hardly any ability to open them to such "nonsense" and they are ever left to ignore this informative human sense. When combined with the other senses and an intelligent mind, many new skills can be acquired that could even be considered inhuman to some. This separation from the different types of minds is what ultimately results in the traditional argument of whether God exists, whether people can predict the future, or if ghosts exist. If we all used this sense prominently and toward the same topics then there would be no question to at least parts of these arguments, but as in many things people are insistently and sadly blind.
My "personal" take:
It is kind of ironic that non-spiritual people call spiritual people blind without any factual evidence to adequately back up their claims, relying purely on the specific person's mental ability to create a comeback, though in reality since they refuse to look at matters in a different way (gathering information from this "6th sense"), then they are truly the ones that might be "blind." See, spiritual people rely on complete trust in God, so they do not "themselves" readily go and figure everything out, so in turn they aren't going to have answers for every single little argument that you put forth, but that does not mean that what they experience is not real or not important.
People do not follow something if there isn't an obvious reason to them why they believe it is real. For the same reason that one may think they are justified in not believing in God (through deductions based on their currently used senses), other people are justified in believing in God (through deductions based on their currently used senses).
