When it comes down to it they will boil it down to their personal faith, as in their Christianity, over their religion, as in their association to the Roman Catholic Church or even the credibility of large sections of the bible. They cherry-pick so much that they end up forming their own take on their religion (i.e. man-made), which brings me back to my original point on how most people choose their own morals. But apparently, this is actually a spiritual thing given to us by god.
Aha, but with this really shouldn't we win? I mean, I don't personally care about how people's personal faith. If they're cherry-picking the Bible it means they have moral sense to know what's actually moral (do unto others...) and what's not (handing over your virgin daughters to would-be angel-rapists), then that's usually good enough for me. Unless they're the sort that cling to the things that suit them and wax theological nonsense about the bits they don't like (see: Homophobes).
Oh, yes, it annoys me and makes me roll my eyes. But so do people who paint their cars sparkly pink.
And, more to the point, if it's all about personal faith and not religion, then religion should have no place in legislation or education or anything else affecting society.