All these arguments in favour of preserving Astroism in its current form never take into account what would rise in its vacuum. After all great empires die the void is filled with war and dark ages vying kingdoms and chaos. And then once that has settled another faith or empire or group will perculate to the top, grow complacent, fat and lazy and then be torn apart. The inevitable decline of the alliances will either come with war drums or fade away with silly panflutes and bells, the thing to realize is when and how you die and whether it was kicking with a swird in hand covered in blood on a battlefield or in your bed as a weak old man.
