I think our subconscious likes to sabotage our lucid endeavors. My most intense LD was laced with a feeling of guilt and a need to wake up before I was late for work. I have not had a LD that complete sense. I've been trying find a way to convince myself that there is no need to feel guilty and that my alarm clock will surely wake me up. For me my subconscious feels like a separate entity that needs to be forced submit or perhaps reconciled with. Of course, I could be completely wrong. Though it seems to me that you need to over come your fear.