Why would someone always wear sunglasses?

Migraines? Social Anxiety? Light Sensitivity? Hiding abuse (black eyes)? Headaches, swollen or dark circles around the eye, dilated pupils, from being stoned or hungover? Intimidating others? Snobbery? Eye infection? Battling Blindness? Actual Blindness. Working in a foundry or welding job? Ego problems?

Sensitive eyes

As we know, the sunglasses will be worn under the strong sunlight to protect our eyes from the uv or other damaging lights. However, more and more people tend to use the sunglasses as the accessory to increase the beauty. Some people always wear sunglasses, whatever indoors or outdoors. It is not good for the eyes.

Some people get irritated by light.

Bono wears sunglasses, as he suffers from glaucoma.

My eyes are sensitive to sunlight. As soon as I walk outside I squinch and can hardly see. I usually get a few stylish pairs and call it a day.

as their wish

Their eyes might be sensitive to light (like mine) and the glasses might be prescription ones like mine. I used to even wear them in shopping centres but now realise it makes you look suspicious. Other than that, idk. Sometimes celebrities wear them at night to tone down the light from flashing cameras.

To hide their ugliness or to look "cool."

Because they blind