Why?
Because Earth has Lu Li, the only True God in the Cosmos.
Most of those who have this thought are the elite of the Milky Way Galaxy, who have the capacity for interstellar migration and cherish their lives, so they won't gamble even a billion-to-one chance of perishing.
Apart from those elites, many large conglomerates of the Milky Way are considering whether to establish their headquarters on the safest planet, Earth.
In this way, even if iron-based lifeforms attack, the impact on top conglomerates could be significant, but the headquarters will remain unharmed.
As long as the headquarters is safe, these conglomerates still have the potential to rise again.
As the saying goes, as long as the green hills remain, there will be no fear of running out of firewood.
For the moment, many elites, corporations, and wealthy individuals are contacting Earth, inquiring about the conditions for interstellar migration.
...
