It has its purpose and is marching toward fulfilling that purpose. And every being is building relationships. So you want to travel, to see what new life is coming elsewhere. You don't want to stay in just America, but also a poor area. Even animals feel this way, and striped bass.
Striped bass come up the Hudson River a spawn here.
That way they multiply themselves. Fallen people cannot find their original hometown, but keep roaming around. The salmon give their flesh to the hatchlings. God and True Parents are offering their flesh and life to feed fallen humanity so we can be restored. So, Unification Church couples are salmon couples.