I don't think every detail of the future is predetermined and we have 'contingent free will', everything in my life didn't lead up to me choosing the socks I did this morning, but my choices are limited by the available options and colored by my experiences. That's just my opinion, however my subjective experience is that my choices are not all inevitable, so absolute determinism doesn't affect me practically, even if it's true.
I'm not anti-Christian. I'm anti-stupid.