I personally believe there is a reason that this state always invites horrific figures, never hallucinating anything pleasent. My friend tried inducing sleep paralysis multiple nights in a row. Many of these dreams support the idea that this state (the state of SP) is an open door for demons. One night a dark hooded figure walked into his room setting a dead body at the foot of his bed, he was so afraid that he had to look away, seeing a pentagram along with other symbols on his wall in blood. Next to this was written "I know your awake."

You can't deny the presence that you feel, it's a fear even when there is nothing to fear.