If it can be, how can the "Absence of Evidence" be "Evidence of Absence?".

While there is no evidence that no god of any kind exists, there is plenty evidence against and plenty of gaps in the Christian conception of God (not to mention all the philosophical problems with the dogma). And quite honestly, even if the Christian God did exist in the form stated, then I still wouldn't follow Christianity or worship him.The "absence of evidence" argument is used against legitimate science all the time. "What caused the Big Bang?" We don't know, but that doesn't nullify all the evidence that proves the theory to at least be partially correct. Same with evolution. While we can't prove macro-evolution to be true (due to an incomplete fossil record due to the rarity of fossilization) it doesn't discount the theory.