maybe there is benefit that we have yet to uncover/discover from this Lucid Dreaming phenomena. I do not know. Therapy for amnesia patient perhaps ? or can improve memory, etc ...? Im just wild guessing. Maybe a knowledgeable person can provide more info. I wonder if one perform the adaab & sunnah before sleeping, eg in wudhu, recite the muawwizaat, almulk, assajdah, alwaqi'ah, doa before sleeping, tasbeeh fatimiyyah ... etc, does one still able to experience this lucid dreaming phenomena ? Very little knowledge we know about dreaming. But I believe the ulama are unanimous in that there are truthful dreams (al-Ru'ya al-Sadiqah, الرؤيا الصادقة) and empty dreams (adhghaath ahlaam, أضغاث أحلام).