Is there any reason not to bring about eternal darkness?

I am a god and I can control the sun and the moon. During the day everything is nice and pretty, but during the night I can find buried treasure thanks to the shining rays of light showing me their location. Because of this I tend to keep the land in perpetual night, except when it needs to be daytime for a quest.

Am I missing anything by doing this? Is there anything that is only available during the day, like the light shafts are only visible at night? Animals, people, enemies, collectibles - everything seems to be available at night as well.

Birds are not available for feeding at night. If you want to achieve having fed all types of animals, you'll need daytime for that.

I have finished the PS2 version of the game twice.
The only difference I remember is that at night there are more demons.
There were puzzle-like situations that required day or night specifically but they are mostly obvious.
Though I remember searching on google for something and the solution turned out to be making it night.