I doubt you could ever not have non-lucid dreams. I have plenty of lucid dreams but even with as many as two or three in a night there is still plenty of time for non-lucids. Some people here, including me, can remember as many as 6 to 10 dreams a night.

I think Matte87 and MindWalker gave you some good info. I need not add to it.

I can say that if you find WILD easier to achieve then stick with it. Why mess with something that works?