LONG TITLE! 
Anyways, i was talking with my friend, and he said that hes always had lucid dreams, but only like once every month. Kind of a NLDer (N for Natral not Non). I asked him about his NLDs [N for Non (lol)] It turns out they were mostly realistic. He said whenever something weird happend he questioned it and became lucid.
So, MY THEORY:
Having mostly realistic dreams and not has its pros and cons. For a dreamer who has mostly realistic: It will be easier to have LDs when starting but will be harder to have several as there would be nothing to question. For a unrealistic dreamer: It will be harder in the beginning because you are used to not questioning things in the dream world, but it will be easier to have more when you get the hang of it because there is a lot of weird things going on to question.
Thoughts, comments?