Why Are Ghosts Nocturnal?

Ever notice that ghosts only seem to be active at night? Ever wonder why that is?

How is it that humans, a diurnal species, somehow become nocturnal after they die?

If "spirits" exist on "another plane of existence" (whatever that means), how come they are sensitive to the day and night cycles of a planet?

If ghosts are "non-physical entities" (whatever that means) why are they constrained by time and space (the things that define physical existence)?

Speaking of space: How come "hauntings" seem to almost entirely happen in isolated settings?

The answer, actually, is quite simple: In fiction, the setting is an important element. A good story requires a compelling setting. Darkness is spooky (diurnal species tend to naturally fear it because they have not evolved to operate well in it) and that fear can distract one's ability to think rationally, making one more likely to believe... well... garbage. In essence, the spookiness of darkness (and isolated settings) numbs your brain so that bullshit can sink in better and the purveyor of that bullshit can manipulate you to whatever ends they may have in mind (like misery, gullibility loves company).

So don't fear the dark, at least not because of ghosts. Fear people who want you to believe unsubstantiated claims. They are much more real and dangerous.

XXX

P.S. - Although it was not my intent, yes, I realize that I also explained why most religions play on fear with threats of banishment to spooky places.