One thing that was mostly not understood- is that although nurses, policemen, firemen, etc- worked on a shift system- doctors did not. OH worked 140 hours (yes, absolutely true) when he was a houseman in 1969 and not much less for the next few years. A doctor that worked a night shift or a week-end shift, would do so ON TOP OF HIS/HER VERY LONG HOURS. I remember when OH worked a day, a night and a day... before having a night off, and back to work again on similar 3 days and 1 night shift again.... It was madness.
And as a GP, he was on a 1 night in 4, or 1 night in 3 when a partner was away or on hols, on top of normal working hours, as well as 1 whole qweek-end in 4 or 3. A night on call could be quiet if you were very lucky, but often meant being up 2 or 3 or more times to go on visits all over the place (including me of course as I then had to (wo)man the phone... despite not having any medical training at all (and unpaid of course- in those days a doctors wife/husband could not have a job themselves for that reason).
That was accepted as par for the course, but I can truly understand that young doctors do NOT want to sacrifice their life, their couple and their family to the job- and want to have a work/life balance.