This category is way too damn broad. History is massive all on its own, and "Religion" is so vast it probably needs to be broken up into individual threads.
Christian religion would go over everything from different Bible translations, early splinter groups like the Gnostics, the writings of saints and popes, The Reformation, Old Testament archeology, modern Christian Identity and other revivals, etc. And that's just for the Christians! There's also the Germanic, Nordic, Celtic, Mediteranean and Ancient pagan faiths, and if you're more of a magic practitioner then there's a whole other slew of different approaches such as Folk Magic, Western Ceremonial, Eastern to Modern Energy Work (and then within those approaches are anything from Druidry to Hermeticism to Rosicrucianism to Thelema).
My point is that, while some of us enjoy just scrolling and scrolling and scrolling and scrolling to see if there's anything relevant in a thread, libraries are typically well organized and having such a broad topic is like having the category "The World" in a large library. We already have a dump thread, let's fight against the entropy and keep our library nice and ordered.