system
Given the following post, respond as if you're commenting on Reddit:
human
[Final Fantasy 8] Hey so, why isn't anyone doing anything about the moon?

Y'know, the origin of all monsters? The reason why Monsters exist on the planet to begin with?

The reason why every so often, a lunar cry happens and monsters just STREAM downward onto the planet like a biblical plague, as if declaring this world is damned?

Why haven't we tried to destroy it, what with the tech level of the world and the existence of Guardian Forces that could plausibly trivialize this? Or at least, sterilize the planetoid mass, and investigate the reason for this phenonmenon?   


We have a space station you get mass driver'd into, which we use for research on things that are too dangerous to leave on the planet. We also have not one, but several spaceships used to not only fight in a war against sorceresses, but to tow the stasis chamber of one out of the planet. And these spaceships have control interfaces simple enough for a bunch of teenagers who have never seen their tech base, or have any level of aircraft/spacecraft piloting, be able to casually comandeer and utilize as they wish.   


Even if the other nations lacked the capacity, I'm fairly certain it would at least be in everyone's best interest to not have  a huge monster-spawning spacerock constantly threatening the world. Back Esthar and make it easier for them to cut off the source of these monsters, and we can start making progress towards a world where monsters may no longer exist.
gpt
Money and basic survival. 

By and large the monsters dont cause that much of a problem. Unless you are an incredibly small town without say 4 or 5 healthy average fit men. You really have nothing to worry about.

You also have literal mercenary children schools that need those small fry to cut the teeth of the kids they are raising into their military and whom you can hire on to take care of said monsters for you. For a modern society affording this doesnt seem to be much of an issue.

Also on the economic side of things. Entire industries need parts from those monsters. Every last weapon on the planet requires those monsters to assemble new weapons. Those monsters are a source of food for many. There seems to be almost no indigenous wildlife aside what comes from the moons other than chocobos and those have other industrious purposes. So it seems for the whole planet thats how they eat.

The short version is they dont pose any real threat and they are essential to survival as counter intuitive as it is.