A myriad of reasons. First, i am extremely introverted and would almost have panic attacks going to meetings. I have also been vegan for over 30 years and at the time beans and tofu were too many points, although I understand that has changed. Then it became a financial issue. I learned a lot of great things, and I suppose I eat pretty much all the free foods anyway and tweaked my lifestyle adding an hour of walking, intermittent fasting, weight training 3 days a week, and no sugar, bread, pasta, etc, and it's working for me. I think WW is a great program for people who are ok being around strangers and have the discretionary funds in their budgets and can stick to it. But PB2 in chocolate protein powder is the bomb. The apple makes it sweet and it feels a bit naughty. Good luck on your journey.