I did it as a boot camp thing, knowing I would be on it for one month. It was hard for me as I am a dairy-eating Primal, it opened my eyes further to my own food habits, and was worth it. I did it though, as per the website. I went Primal May 1, 2012 and did the Whole 30 for October of 2012. I would consider doing it again sometime.
I have a mantra that I have spouted for years... "If I eat right, I feel right. If I feel right, I exercise right. If I exercise right, I think right. If I think right, I eat right..." Phil-SC