The President has hundreds, if not thousands of other people right there to help them and there is an Amendment that allows for the removal of Presidents who are genuinely not able to do their job any longer.
Air traffic controllers have one of the highest suicide rates of any specific profession in the country. I don't think any of our Presidents have died of suicide, even after leaving office.
An air traffic controller stares in confusion at his screen, while his colleagues start shouting instructions at him and running over to watch the unfolding situation. Just another day for an air traffic controller in what is called the most stressful job in the world?
www.forbes.com
Not saying that being President isn't a stressful job or at least is for most people, but air traffic controller and/or commercial pilot come with a much higher level of acute stress that happens every day, every shift and cannot be delegated to others during that timeframe to relieve some of that stress, as Presidents can do.