Heaven + Hell = Earth
I think every religion has a bit of truth mixed in with all the BS. There has to be some sort of universal truth out there.
But the way I see it Earth is Heaven, it's mankind that are turning it into Hell.
In much the same way everybody is capable of good and evil, I think there can be a chance that God and Satan are the same thing.
I would rather keep an open mind to the universal truth whatever that may be, then be closed minded and believe I'm going to heaven and not accept blatantly obvious facts that might go against the popular faith.