Probably the same reason I have sold off yet, the what if, hey the idea is still a sound one, it's just whether or not the people actually in charge can pull their collective heads out of their collective aholes and make it happen.
I can only speak for myself, and I know I am small pototoes compared to many on this forum, when I invested the cash I wrote it off it either produces or the money is gone.
I still find the let down of the CE removal and being current and the resulting status since then to be rather irritating, and though I am still hopeful this will pay off in the end, I am not going to continue to lie to myself or anyone else about what is actually happening, in the now. I don't come by here very often anymore, but a quick glance of the board showed the same people saying the same thing about what a great stock this will be soon. LOL