User blog comment:LurkerLordB/Religion in a world without Christianity/@comment-1630894-20120425221439

Since no one is going to be convinced that their religion is false in a debate over comments on a blog, and the current debates about Islam and Judaism have spiraled down to that, I'm going to take LordGanon's advice and simply state that in this scenario, no Christianity=no Islam, and that if anyone wants to continue those debates on another blog or website, they can do so.

So, let's get back to the old pagan religions, which would presumably dominate. To start a conversation off, would the religion of Sol Invictus have replaced and/or absorbed the traditional Roman religion? And how would the Roman religion last after Rome's fall?