I have said this in other threads and will post it once again...
I dont know if burn out exists or not, but logically, I can tell you that a 'surgeon' simply cannot work 1 day a week and make a living. They will not get enough cases and they cannot FU their patients close enough. I think a 70 year old surgeon has it much worse than we do.
With that said, I assure you that 70 year old EM physicians CAN work 1 day a week. Even if you say well its really tough so you work ONE EIGHT HOUR shift per week. And lets say you are at about the lowest pay scale in the country and make $90 per hour... that is almost 40K per year. We are talking rural EM at that number and slow with super low acuity. This is the worse case if you ask me.
I work 12 to 15 twelve hour shifts currently at the start of my career in a busy Leve I trauma center. I make great money and way more than I need to make when I am 60. I am very confident when I hit the 50-60+ age range, I will be comfortable working a much less to supplement whatever retirement accounts I have built by then plus keep me interested in life.
Also, what gets me is that where are you guys working that have all these 70 year old people working? Sure, we have the isolated old person that still shows up on occasion and dates 18 year old woman, runs marathons, etc. Generally, most of the doctors I work with (in other specialties) are probably in their later 50s at the most...?