I was on Xenical for a year and had fab weight loss. I stopped them 2 weeks ago and started Rosemary Conley the same day. So far I've lost 4½lbs in those 2 weeks, 94½lbs in total. I agree that if it was a simple case of sticking to a diet, I would have lost the weight, but I also had psychological and emotional issues. Xencial helped me deal with it, and it helped me turn my life around a full 180.
Over the past 20 years I had repeatedly tried Weight Watchers, Slimming World, Slimfast, calorie counting. Yes I initially lost weight, but I always ended up sabotaging myself, putting the weight back on and then some.
Xenical and Alli are appropiate for some people, not everyone, and like everyone else here the people on them are trying to lose weight, people using them need support and help and encouragement like everyone else here.