I don't know if you could keep doing that forever. I mean you could just sleep your life away within a LD and only wake to eat and use the bathroom, but I don't know if you'd be able to go back to sleep completely to be able to return to a LD. I think there is such a thing as being to awake i.e. your body being awake so much that you can't go back to sleep right away. Though, I never tried myself. Though, I think what you're talking about is the point when LD becomes an addiction. When you rather live out your life in a LD then in waking life. LD can be used to help improve your life. Not to decide over one or the other.