yea I've never been convinced that it's justified to bring that stuff into the equation.
Discussion
For the sake of argument, say that the God of the Christian Scriptures does exist--and has spoken. Shouldn't that influence...everything? I believe he does, and he has--so cannot justify leaving him _out_ of the equation. (In fact, I'd have a hard time justifying _equations_ at all--but that's beside the point.)
This is kind of the argument of _presuppositional apologetics_ -- no one argues from a position of 'neutrality.' We start with God, we end with God -- or we start rejecting him, and end without him too. At the top rung of every logical chain of argumetn is that principal starting point: God is, _therefore_... or God is not, _therefore_... Dostoevsky got at the heart of this when he said, "If there is no God, then all things are permissible."