empathy

one of my favourite things about poker is how it shows most people have no empathy whatsoever. I say favourite, but it's really quite a sad realisation.

case in point:
someone posted something about religion on facebook. cue, many posts, and there always seems to be one person saying something like, "religion teaches people what to think, not how to think"
My favourite comment was "religion deals in absolutes", i'm trying to not reply, "unlike people who talk negatively about religion".
and then there's atheists who think that by proclaiming they're atheists makes their arguments more logical. like football fans who support awful teams, believing that this makes their opinions about football more important than fans who support premier league sides.

How self centred do you have to be to believe you know about all religions, and more importantly, what people take from them? and then to generalise about all of them, complaining about how they are the ones dealing in absolutes?

Poker players, especially when they start playing, always think about what they would do in their opponents shoes instead of what their opponent would do in their opponent's shoes. Even as you improve, you assume other people know some of the new things that you've just learnt! It sadly seems like human nature is to assume that everyone else does or should think like you.
i don't know how most people think this way, how they can be so sure about what they 'know'.