The residents of the magical world are progressing faster than any of us expected. Even before the end of the first generation they had assembled villages, farms and temples with a decent standard of living.
The worship of mortals is extremely beneficial for fledgling deities like us. It creates spiritually attuned Divine Energy that goes directly to our Divine Body, solidifying it and strengthening it. That is the bridge across the great divide between Divine Realm Cultivators and Gods, the ability to gain strength without cultivation.
As we gain strength, it also stabilizes the realm we have created, and ties us to it even more inextricably. We are slowly becoming part of this realm, even as the population expands and it starts to stabilize the Realm enough that it could be shifted into the Mortal Planes.