at a starry sky at night, is one of my simple pleasures. It helps relax my nerves & lowers my stress levels, not to mention, taking my eyes & thoughts to far distant shores.
But sadly, those who live in or near big cities can't really do this.
And ya have to drive a goodly distance from these cities, to get away from all that light pollution, just to see more then a dozen stars.

When the light blub was invented was a good thing in general. Then they were put up on light posts to deter criminals. Then companies really got into the act with their signs and cities glowed around the world. When ya see a picture from space, of a city at night, it dazzles the eyes.

But! And I do mean but! There is a down side. Several of them in fact!

All those lights ya see from space, is wasted electricity, which equals cost and all that heat is adding to local tempts. So, now a move is on to use better bulbs, that don't give off so much heat and sheilds are being put on the tops of posts to direct the light downward. OK! That sounds like a good plan (at least so far).

When a city or town has on lights 24/7, it affects wildlife!
Breeding & feeding habits change and NOT for the better.
I'll use one example: RATS!!!
They normally come out at night (dark) to feed and hold up in their dens during the day (light). But in cities, with 24/7 lighting, rats are not only coming out in the night but also during the day and finding new dens in homes that offer a small bit of darkness. Those animals that prey on rats, have no darkness to hide in for the hunt. Owls hunt at night, due to the type of vision they have, and their population numbers are now going down due to this lighting problem.
I just used rats as an example but all animals are affected.

Now on to humans:
It has now been proven, that women, that live in cities, have more cases of breast cancer then do women who live in less night lighted areas. And it revolves around two things: Melatonin & 24/7 lighting!
During the daylight hours women produce very little melatonin, but durning night time hours a lot is produced. Now add in 24/7 lighting! Woman's bodies react by producing melatonin in the same amounts 24/7 as it does at night. And if a woman is a shift worker, the rate is even worse.

When a child of the city sees a starry sky for the first time, the awe on their face is truly a photo moment.
So we need the darkness, even though it might scare us a bit, to have healthier lives. And then there is the star factor: Words fail to describe that!

So if you live in an area where ya can see the greatness of the stars & Milky Way on a nightly basis, you are one of the lucky ones. For those of you who can't: Take a nice looooong drive out into the country some night and become that child of awe!