In south Florida where I live instead of being able to see countless thousands of stars, I'm lucky if I can see one planet and one star. I once lived in a rural area in Illinois. I saw at least a thousand stars.

CBS News: Light pollution increasing around the globe, researchers say

"People's sleep can be marred, which in turn can affect their health. The migration and reproduction of birds, fish, amphibians, insects and bats can be disrupted. Plants can have abnormally extended growing periods. And forget about seeing stars or the Milky Way, if the trend continues."