HTBWC I agree that the influences are clear to see, and I still find studying Ancient Writings, not just those in the various Bibles, but others too, a fascinating thing to do. Even though I am an Atheist too.
I always ask such questions as " when was this actually written ? what were the religious and other thoughts in those days ? and What is the Writer's agenda ?".
The last question should not be forgotten, ALL the Bible writers had a particular aim and reason for writing that colours their work, if you do not understand what that is, you cannot successfully understand the work.
Just one example, The Book of Daniel was written as a political tract, a polemic against Antiochus 1V "Epiphanes", not as a work of Prophecy, the Apocalyptic stuff being there more to safely put the work in that Genre than for it to be an obvious political rant.