I kind of tripped over Primal when I was doing some googling on pink slime and negative effects of soy.
I read the beginning stuff and it just seemed sane. Animals and veggies for food. Move, but don't kill yourself doing it. Get some sleep and sun. Don't ingest toxins. Lift stuff. Play, think, and don't hurt yourself. I thought I was eating fairly healthfully, but there were plenty of tweaks to be made because I'd been relying on low calorie fake foods for condiments and cooking fats.
The lower carb aspect made sense because that's kind of the way I like to eat naturally (with a couple of glaring exceptions like the occasional po'boy).
I had a doctor once that just in passing said to me, "Be your own parent." And Primal is kind of that for me. It took a lot of things I knew and some new stuff, and put it all in a nice little list.
Not sure if I'm expressing it well, but it's kind of like if you spend the day reading through piles of crap, and suddenly something doesn't make you shake your head with its doublespeak.
I'm not a hundred percenter but I feel good about the way I eat and move and don't think I'm doing anything really overt to damage my health. However, it hasn't turned me from a curmudgeon to a cheerleader. I'm still a bitch.