When you see someone wearing darkened glasses or sunglasses inside in a lighted room do you think he/she is showoffy and wants attention? I do it all the time and I prefer invisibility. WHY you ask? Because years ago an optometrist told me that my pupils are larger than normal and I should protect my eyes from bright lights including indoors. Which I do. So when you think negatively about someone remember that you don't anything about that person and perhaps you might give "the benefit of the doubt" that maybe there is a logical reason.