So... to paint a picture of my level of confusion, I just now realized you aren't, actually, a new member to the forum and just an old member who recently changed their username. Thus, in my brain, I'm going "what is this new user going on about... I have only replied to like one other thread of theirs, I am very confused now!" I think I know who you are (were?) now though. Still confused about how a remark admiring that the value of miracles is understood in many traditions and that humans like a good mystery sounded problematic to you, but we are were we are.
In any case, two reasons, I think. The main reason is simple numbers - few are posting new threads about religious topics on this site so there are not that many to respond to. Many of us (myself included) came here specifically to talk about the world's religions so we're going to reply more often to threads about that topic. When not many folks create threads, well... yeah. It's a simple numbers thing, really. But beyond that, what folks will write will be an extension of who they are and what they know. Part of the point of RF is for folks of diverse backgrounds and (ir)religions to come together to share knowledge and experiences. I don't feel comfortable speaking to Biblical traditions because that isn't what I know, but I and other members may still have something of value to contribute. Like, say, appreciating how miracles are relevant in many traditions as a point of connection and common kinship.
That was the spirit of my response, so... yeah. I'm just confused. Truly, if you don't want non-Biblical perspectives in threads you make, please post them in places that make that apparent. There's nothing at all wrong with wanting to limit discussion or debate to like-minded traditions.