Our dreams and nightmares provide a landscape into another reality. So, are nightmares a non-ordinary reality? Why are we so skeptical about other levels of consciousness and existence?

Seeker Project 4 Spiritual Exploration (SP4SE)
Techniques for exploring consciousness
Our dreams and nightmares provide a landscape into another reality. So, are nightmares a non-ordinary reality? Why are we so skeptical about other levels of consciousness and existence?