Totally agree with you TowerDog.
I think there is a hugely greater percentage of pilots flying fatigued than flying under the influence of Alcohol.
Most Airlines now roster max FDP followed by Min Rest ad infinitum.
As far as comparisons with medicine go I suspect there are many Doctors and Nurses working when fatigued (I don't mean tired). Who knows what mistakes are made in these circumstances?
Don't forget there is a comparison chart of Hours Awake/ Alcohol Equivalent.