Here are just a few things that lucid dreaming has done for me:
1. Given me inspiration for my drawings and paintings
2. Answering some of my questions (what my subconscious thinks, that is)
3. Allowing me to experience some amazing things like manipulating the forces of nature

Lucid dreaming really opens up a new world to anyone. After a LD, I wake up feeling extremely happy; it is almost impossible to explain!