Newbie/lurker here.
I've read many of the posts that you're referring to, and, if it makes you feel any better, feel just as incredulous. I'm still on the fence about having the surgery (I'm almost there - and sure that my upcoming trip to Tokyo, filled with stares at the fat American gajin huffing and puffing her way around the city, will push me off the fence entirely), but if/when I do go through with it, I can't imagine going back to the "I do what I want" eating habits that got me here in the first place.
Please feel free to hand my @ss to me when I start complaining.