Considering that gods cannot intervene after a world is created (as per 1232), that Fenris abandoned the goblins when his strategy for them failed and they survived, and that there is a world inside the Snarl (who presumably unmade the Eastern Pantheon and therefore is a world with no gods), I would say that odds are extremely high that yes, mortals can live without gods just fine.
As I said earlier in this thread, "A made B" does not give A the right to exploit B.