Because we would have polar opposite views on just about everything. It would inevitably lead to frustration for both of us. Even if she were a Christian, if that is all we have in common, I don't think it would be worth the investment.If I was still of dating age, I would of course date a Christian or a liberal. Or a liberal Christian. Why not?
Your comment about masochism is stupid.
My point about masochism was sort of tongue in cheek. But some people truly do enjoy being in a combative relationship. It's not for me though.