It's illogical, because I'm agnostic about everything like that, religion included.

Why do so many religions include a race of immortal beings who are constantly battling one another?

Many religions include some form of an afterlife.

Indeed, almost every religion includes a notion of end time.

The 2006 Act expanded this, noting that religion "includes.

Other religions practiced in the area include Buddhism and Islam.

However, it is not 'naturalistic' in the sense that the religion does include supernatural or transcendent belief.

The religion includes belief in communicating with the souls of the dead.

But religions may include superstitions or make use of magical thinking.

Any religion which goes against (parts of) the fundamentals of this system, includes bad aspects too.