A friend indirectly justified to me why he doesn't read it. We were discussing theology but not in an atheist vs theist type way. I was discussing it as if I were a Christian and he stopped me and said 'look, I don't need to understand these things. I already know God is real and that's all I need'. I was blown away by that because he has effectively put himself into an intellectually redundant box where, in my eyes, he's not a 'True Christian' (what Christian says they don't need to learn from the Bible?) and neither is he willing to learn a thing or two.
"It is the mark of an educated mind to be able to entertain a thought without accepting it" ~ Aristotle