Sheltered by the darkness

I discovered something... I start to feel more safe and secure during the dark hours of the day.
That's odd to me.

Let's take a small child. A child who has no scars on their soul, doesn't know harm nor danger, the child has never experienced anything bad. Never the less the child is afraid of the dark. The human instinct takes over: "we can see anything, it MIGHT be dangerous."
I assume we're born this way(?) I don't know, but for experiments reason, lets just go with that assumption for a minute.

If its "normal" to be afraid of the dark, why do I feel more safe during the dark hours, than throughout the day?
I've thought about that from time to time during the week, and I've come up with a couple of situations, that might be the reason:
- there's no disturbing phone calls, where you have to check for salesmen before you answer
- there's no unexpected visits, or people who scared the crap out of me for using our land as a parking spot
- no appointments I have to go to
- no phone calls pending. I have to make all the appointments for us, and the animals, since I have plenty of time to stay on hold!
- theres not nearly as much noise, than during the daytime
- bf is asleep, and doesn't interrupt my thoughts each minute
- the animals are asleep and don't need a door "man" all the time

If I take each of the above, break it apart and put it back together, nighttime it's the only time of day, where I have a decent chance of peace.
Nobody asks me anything, noone wants me to do something,  noone interrupts. It's just calm and quiet.