I work in a restaurant and looooove asking them if they'd like extra mayo or dressing for their salad.  I could careless if they're dieting, nobody is forcing those calories down their gullet and I watch them gobble down their food that is enough for 2-4+ adults.  When the fuck do these things do anything other than obsess over eating? Holy shit, can't imagine throwing my life away for anything, much less for non-stop grazing like livestock.