I think most times, when people want to discuss politics and religion, they just really want to see if you agree with them.

[b]From the other side...[/b]
Often a question or story won't call for differing opinions. It's just there to seek like-minded people. Yet people will invade these posts with the intent of pushing their own agenda or simply hoping to derail the post. It's best to create your own post rather than confront. I sometimes post very interesting things and I hate it when nobody gives me credit for knowing so much. I hate it even more when someone with an inferior education tries to challenge me without even bothering to understand what I'm sharing.

Most people want to have their own opinions validated; they're not actually interested in a constructive debate.

Yes. Some are extremist on both topics

Very wise and spot on!