Also, one problem I always had with the gospel's.

They were written after the fact.

You yourself said that Luke interviewed many people to write his gospel. How on earth do they know that what they quote Jesus and others as saying, is the EXACT words that he used, if its written after the fact? That leaves a margin of error in his words, and no reliable means at the time to make sure what they were attributing to him, was actually what he said.

Im not saying that Jesus didnt say things similar, with the same meaning, but a revisionists history is always much more interesting then the actual thing. There is too much of a chance for bias in the writings, and too much of a chance of error in its quotation of others.

Not to mention, man is imperfect, so to expect man to be able to transcribe past events, perfectly, in a book, is hard to believe. There are bound to be errors, but how can you have errors in a book of God?