That really depends on the situation and on your point of view. Really religious people or the opposite - convinced atheists - may seem different to you because the subject affects them much more than you think.
From the way you sound, I get the feeling that you are neutral to this subject. That's probably why you can't see things from their point of view. When you're really interested in something that controls your whole life or something that has a strong impact on you, you can't treat the subject as if it would be an ordinary one to you, which I'm guessing is how you feel towards this.
Let's just suppose that instead of Religion & Spirituality, the category would be focused on your hobbies. Whatever you would do, if you would ask or answer questions on that particular category, you wouldn't be able to sound detached. You would come off as very implied in the subject. And when you're part of something and so focused on something, you come off as weird, just like you see those questions. For example someone who has totally different interests than you do wouldn't be able to fully understand your behaviour. It all depends on whether you can relate or not.