No, I don't think so, if there's no weight-control issues involved. I can tell you there's been many a time where I've overeaten to the point of feeling terrible and I wished I was able to do this (I can't make myself puke, I've never been able to push myself past the initial gag). I don't think there's anything mentally wrong with it. From a health point of view, it's obviously not the smartest idea, and you'd do yourself a favour by watching your portion sizes (easier said than done, of course, eh

).