Sometimes I can understand why mirrors make people uncomfortable especially at night.
You are looking at your own reflection but in a dark room even familiar things start feeling strange and that is the whole tradition of mirrors crime where they use mirrors to try
to see things beyond what they can normally perceive.
You probably heard of Bloody Mary,
the ritual where people stand in front of a mirror and repeat their names. Some practitioners say these rituals can open the door to things that aren't necessarily friendly.
They also believe darkness and candlelight can help them see what they are looking for. I don't know how much of those claims people should take literally but I get why the ideas have stayed around for so long.
A mirror is another object in the mere human eye yet but put it in the right setting site may put you into another dimension or even take you somewhere else darling