No doctor dies wishing for another on-call shift, so why is striking a work-life balance so hard?

One of my favourite questions to ask other doctors is: “If I was to take your job away from you right now, what would you do?”
So many blank stares.
Some have answers, most don’t.
It helps me differentiate between the two types of doctors: those who practise work-life balance, and those who don’t.