A Doomed Mind?

I've found that my best thinking skills (however meager) lead me away from Christian belief. What can I make of that? If Christian beliefs are actually true, why would God give me a brain whose best thinking skills lead away from truth and salvation? I don't think God would do that. If God gave me this brain, I would hope that I’ve made God proud by using it to the best of my ability, breaking free of constrictive belief systems that my mind has diligently examined and come to perceive as man-made.