I doesn't really understand the danger of sleeping normally at night while being lucid ..Most of all it just only a dreams..The different is maybe just the awareness and you can tweak it a little bit..But in the end the reality after waking up is all the matter..Just like games is addicting..But people still live up normally..It just like some kind of hobby that you do at night..Exploring the dream world..I think that there is no harm in that..In short its a choice in life..Some prefer to live in reality and some to live in fantasy..Its up to each of the single individual out there..For me..I choose to Live in both