There's a world of difference between:
* waking up in the late morning after a pleasant night out the previous night, looking out the window at the clear blue sky, and deciding to go for flight with some friends to somewhere nice for lunch, or
* getting dragged out of bed before dawn after leaving the party early the night before, driving to work in the pouring rain/fog/already hot tropics - forecast to 'improve' to occasional thunderstorms - planning & refueling the a/c, cleaning the a/c because the last charter was a rush job & lacked time to do it afterwards, hand loading loading 600kg of freight or pax + bags, dozing all day in the heatsoaked a/c at an airstrip in the middle of nowhere while the pax go do whatever pax go to do then finally returning home late that afternoon to poor weather & diversions, cleaning the a/c & completing the company paperwork before driving home.....every day.