It isn't all about flying. (Although, the flying is fun!) I can also continue a dream from a previous night, picking up where I left off like opening up a book to finish a chapter. I can control where I go, I can make choices about what will happen, and so much more.
I have been lucid dreaming since I was a small child. The first time I remember having a lucid dream, I was four years old. I was sleeping in the floor of my grandparent's living room, and I dreamed that a strange woman was in the apartment with me. She was very scary, and she was trying to hurt me. I remember realizing it was a dream because the couch and table were in the wrong place. I stood up, and told her to leave. She turned around, and walked through the closed door. Shortly after that, I woke up.
There are still some nights when I'm in a lucid dream state, but have a hard time gaining full control over what is happening. This usually only happens during extreme nightmares, and it feels similar to having a panic attack. In those cases, I will eventually make myself wake up.
Jana mentioned that she has been dreaming about writing. I don't often dream about writing, but I'm thinking maybe I should start. It might help me to write more often during my waking hours if I got some practice in while I was asleep.
Do you have lucid dreams?