I posted the following on a forum I belong to, and I think the point is general enough to post here as well:
I doubt that any two people on this forum have exactly the same beliefs and values, or even exactly the same beliefs and values about all of the major issues we discuss here.
For example, Christians like to paint atheists as moral subjectivists, but this isn’t quite right. Atheists disagree about whether morality is objective. In addition, the atheists on this forum who think morality is objective all have different ideas about what objective morality looks like, and the atheists who think morality is subjective on this forum all have different ideas about what subjective morality looks like (e.g., HRG’s ideas on the subject vs. Corvidal’s).
Christians aren’t a uniform group, either. No two Christians on this forum have exactly the same views. There are Catholics and Protestants, liberal Christians and evangelicals, Christians in favor of homosexual marriage and Christians opposed to it, and Christians in favor of legalizing abortion and Christians opposed to it. And there are all kinds of different specific variations within each of these camps.
The metaphysical reason for this is that people have free will – they choose how they interpret the evidence available to them, and no two people have exactly the same evidence or make exactly the same decisions. To take an example we’re all familiar with, if you post a story about a Christian terrorist blowing up an abortion clinic, one person will interpret it as an isolated incident, another will interpret it as representative of the logical implications of Christianity.
My point is that you have to learn what each individual poster thinks by talking to them. Broad generalizations about what a group believes are necessary for some purposes, but don’t rely on them too much when you’re dealing with a specific member of that ideology.