Every person on earth dreams pretty much every night, and evidence suggests that all mammals dream also. It follows then that something extremely important must be going on while we sleep and dream, yet in the industrialized world, the majority of people pay little attention to dreams, lucid dreams and dream interpretation, and sometimes even shortchange themselves on sleep because it is perceived as lost time, or at best unproductive.
How astonishing that we generally ignore this third (and possibly far more) of ourselves - our dreams. An appropriate analogy to the grandeur of this mass misunderstanding is the incredible inertia in the middle ages against the idea of earth being other than flat until repeated point-blank evidence like Galileo’s observation of other planets and their moons as well as the journeys of Columbus and other explorers across the ocean proved conclusively otherwise. The challenge was that people’s everyday experience contradicted the idea of a spherical earth because nobody had yet gained perspective from outside of the system in order to interpret their experience from a larger view point. Airplanes and especially photographs from space were not yet available, so there was little first hand evidence of a new understanding that was a great leap beyond the old interpretation. Fortunately, with continuing research and analysis, proper understanding grew, and people eventually began to come around to an alternative view. The shift in understanding triggered an ensuing surge of exploration as the realization and acceptance finally dawned that our world really isn't flat after all.
Dreams, in the same way, encompass yet another entire dimension of experience, an alternative world as yet unexplored by most, where a fascinating sphere of activity awaits investigation, intrepretation, and potential harvest for greater meaning and fulfillment in waking life. The challenge is again the same — common daily experience for the average person offers little proof of this other reality that dreams encompass, let alone the possible value that understanding, interpreting, applying and thereby harvesting this other dimension of experience can bring - unless one can gain perspective from outside the 9-to-5 work day framework and the scientific purely-objective analysis of the system.
Dream-related mental skills such as dream recall, dream interpretation, and lucid dreaming and information on subjects such as the perhaps-bitter-yet-valuable-medicine meaning of nightmares or precognitive dreams isn’t often taught in our schools; the majority of our parents knew or passed on little about the value of remembering and understanding dreams as we grew up, or the great potential that lucid dreams can offer for our personal evolution. Therefore it's no big surprise that many adults remember few or no dreams, and even less ponder the meaning of dream symbolism or set out to research, interpret and mine the jewels of guidance and creative inspiration hidden just below the surface of consciousness -- in dreams. Basically, nobody told us or showed us how dreams can be extremely practical.