I think you are right, everyone has at least one lucid dream in their lives. Unfortunately, most of them kind of shrug it off an quickly forget about it.

Oh the Waste!

I average 3-4 LD's a week when I am getting a normal amount of sleep. Currently, I am just averaging 2 a week because I am only sleeping about 6 hours a night.
On vacations, when I can sleep late every morning, and can dedicate more time to MILD and WILD, my rate goes way up!