For me one of the reasons that I wanted to have LDs is because I want to have control over everything. You see I live my life and over half of it has been sleeping and work. Two things that I have to do, but dont nessasarily consider being in control of my life. So if I can at least be in control of my dreams I will feel that I am getting more out of my life. Another reason is simply the wierd and cool factor of the whole thing.