I wonder often about "stress" within the pilot profession. Back in the day it was the norm to retire to the pub get "bladderd" talk about your day & retire to bed. Wakeing up a few hours later & doing it again. I heard of very few (maybe one) pilots being off with stress. Now it is the norm for an airline to have 4to6 out of 400 off at any one time, with stress. So was alcohol abuse the safety valve. Now alcohol use is a career limiting substance, "so" are drugs now being used. By the way I have known many who say our profession is not stressful only to watch them exhibit the classic signs & the odd one having a mental breakdown.