Sometimes we avoid the mirror because we don’t want to face ourselves.
It is not surprising that many superstitions surround mirrors, not least the seven years of bad luck consequent upon breaking one unless the fragments are buried by moonlight to expiate that fate.
The Irish tradition of covering mirrors when a person died ensured that the soul would not take fright or lose its way when making its exit from the world.
Vampires have traditionally been identified by their absence in mirrors, and looking into a mirror holding lighted candles is meant to reveal more than we might want from the other side.
All of these myths must contribute to the phobic fear of mirrors, or Eisoptrophobia, which is the avoidance of reflections or representations of oneself.