But my criminal caloric acts on this one day will still pale in comparison to what your average fatty does every. single. day. of their miserable lives.  And that's just it.  We practice a modicum of moderation, even moderation itself.  They only consume, as much as possible, as many things as possible, in as many ways as possible every moment of their lives.  Hence why gluttony is such a old-school sin.  The fat is only an indicator of the terrible being inside.