One of the things I liked about WW points, was the ease of counting in my head. It also helped me not obsess over the "small" calories. Was that apple 100 calories or 110?
The first organized plan I ever followed was WW (it was an exchange plan at the time, 1972 and I was 8 years old).
I tend to prefer exchange plans, and now I'm following a low-carb exchange plan. Exchange plans help me stay focused on a balanced doet. Otherwise I have a tendency to go on food jags.
I don't know why some plans "click" for people when similar plans don't. Just personal idiosyncracy? I'm not sure, but I think the actual food plan for me is secondary to the support factor.
I can do it "on my own" only so long before I start procrastinating and slacking off. Weekly weigh-ins and meetings keep me focused.
I chose TOPS (taking off pounds sensibly) because of the price (one year at TOPS is often cheaper than a month at WW, and there are ways to win money and prizes for weight loss). Also TOPS allows members to choose their own food plans.
For me, support and someone looking over my shoulder really helps. It's not that I'm doing weight loss for anyone other than myself, but when it comes to my food and expercise plan, I have ADD. I lose focus and get distracted very easily. For me in-person support and accountability helps provide that focus.
If there were weight-loss communes, I think I'd consider joining. Peer pressure, it can be a good thing.