I think yellowtriumph was just trying to stay on point, keeping the discussion related to alcohol consumption. The thread was always going to drift towards fatigue eventually, to try and put it into perspective.
Alcohol consumption is something that can be controlled by the pilot at any time (unless they have a problem) and if so, is a silly thing to get caught out by. Fatigue I imagine is to do with factors higher up the chain, relating to duty times and so on, things that are slightly out of a pilot's control.
It may be all well and good not reporting for work due to fatigue as someone suggested, but I'd imagine it's the fear of regularly doing so and the repercussions on their career at their airline that prevents them from doing so?
I'd be interested to know, how many professional pilots here have called the office and told them they are unfit to fly after self-diagnosing themselves as being fatigued? And have you had to do it regularly?