Well my mother in law asked me this question a while back, and I genuinely couldn't think of anything. I really do eat a good variety, and ww is fab because you don't have to cut anything out as we know. And to be honest, I have never minded saying no to dessert, etc, because I love losing weight!
HOWEVER, recently I have found myself slipping back the odd time into my pre-ww habits, I think due to some problems I have been having in work. When I have went totally off plan lately, I find myself going for NORMAL bread (I usually stick to nimble), spread (I use no butter or spread now, ever) and cheese melted (I very rarely eat cheese now), so I guess thats my ultimate comfort food! But I have never actually felt deprived not having it.
WW is fab, I have dabbled with sw lately, and without a doubt I found it wayyyyyyy more restrictive, tho it was nice not having to track. But I now think trackings a small price to pay for getting to eat whatever I want!!!