Funny how you say that, in my opinion, both the waking self and the dreaming self is entirely the same.

When you're awake you're awake, when you're sleep you think you're awake, same person just in different worlds, but when you're lucid, Its like the same thing as meditating in the real world, awareness.

Being god of a world sounds good for..... The first 30 seconds.... BUT what is really fun is creativity.
Using lucidity and dreaming for creativity. You don't have to fly away and sex down npcs, yeah that's not fun to me, what's fun to me is being in a persistent realm with lots of limits so to make it more fun!

So don't diss lucid dreaming, it's pretty nice for all sorts of reasons besides the general...stigmas...