Have you ever noticed how God always agrees with you? Not as often with your neighbor, your congressman, your family or even the pope. But he (or she, or it,) definitely agrees with you. Other people just aren't enlightened enough to realize that. Yet.
Funny how that works.
Was the Christian God cool with slavery? Slave owners sure thought so -- and had plenty of Biblical canon to support it. Abolitionists disagreed. Did God want women to vote? Not according to anti-suffragists. Suffragists were convinced otherwise. If society continues this descent into level-headed compassion, fifty years from now people will be claiming that God is pro-fur and factory farming. When one cannot defend a belief in the current context, moving the framework back a few thousand years and putting the blame on God is a pretty good fallback strategy.
I know, I know. There's only one God and he is not at all ambiguous: he agrees with you. It's all right there in the Bible or whatever holy book you believe in, as you have decided to interpret it. It's perfectly clear, right?
Except to all the people it isn't. Assume that you are a member of (depending on your definition) the largest religious denomination in the world, the Latin Catholic Church. Around 1.15 of the world's 7 billion people share your belief system, if we assume (very wrongly) that local churches are uniform throughout the system. The rest of the world thinks that you're crazy -- or at least misguided on some pretty key points.