Because, you see, the Fantasy of Being Thin is not just about becoming small enough to be perceived as more acceptable. It is about becoming an entirely different person – one with far more courage, confidence, and luck than the fat you has. It’s not just, “When I’m thin, I’ll look good in a bathing suit”; it’s “When I’m thin, I will be the kind of person who struts down the beach in a bikini, making men weep.”
Oh, yes. Check and check. The comments are really good, too, especially this one, which beautifully articulates why it's so damn, damn hard to let go of the fantasy.