I don't see how you could get bored by lucid dreaming. I mean you have to live everyday of your life more often than not repeating the same mundane schedule over and over. In a dream you can do whatever you want with no limitations. To me dreams are an alternate existence one where you can do anything you can imagine.

The only way I would get bored of lucid dreaming is if my actual life became a lucid dream. At least then I would have complete control instead of the hit and miss of dreams.