It opens up a neat intellectual state of conciousness that is really appealing. Being able to control your own world, that's photorealistic, just like in real life? Sounds pretty cool to me.

It's like living a 2nd, or 3rd life, or many more, each night and knowing your actions won't _really_ affect you in "real" life, so you can do whatever you want, letting your curiousity run wild. Plus, you can do things that would never be humanly possible, inside a lucid dream. The possibilities are practically endless.