My DM and stepdad both retired at 55/60 and 60 respectively.
DM was medically retired from teaching (she did job share at one point) with rheumatoid arthritis (not sure how that happened as nothing in the family) but a good pension and then developed glaucoma too. Stepdad retired as a civil servant. DM had paid off her mortgage by 40 or early 40s. Stepdad was paid badly as a civil servant and had to do other work outside his hours but got a good pension.
I paid off my own mortgage a year or two ago but partly because I had investments mature well, had savings which covered it and it made sense to do it then Covid also helped a lot as I saved a lot by WFH.
I did want to re-mortgage and get an extension or loft conversion but decided not to do so as didn't need it.
Both my best friends are working in jobs where one is now back in the office 5 days a week as of recently after WFH through covid, she's a stroke victim re-coverer. She's also a semi perm carer for her DM whom she lives with.
The other WFH a lot but is also back in the office 2-3 days a week and has visiting times she has to see her DM who's in a care home, either during the week or on a Friday/weekend. Both of them are early 50s, with health issues partly caused by weight gain but one has recently been diagnosed with an underactive thyroid.
From family friends/friends DC - a lot of younger people, do go off sick with anxiety and stress now, or WFH due to that. Which is great if they're allowed to do that, but if their company wants them in the office more, what are they supposed to do? Yes, they can apply for reasonable adjustments but their company doesn't have to grant them.
Whenever I've been sick when younger, I've almost always had to go or gone into the office, whether with depression, anxiety - both the latter at one stage were caused by drama caused by my wider family and also caused by one ex-DP/SO too.
I just had to get on with it, had maybe 2 days off at one point, and it was actually better for me being in the office, rather than being at home.
I have PTSD from my childhood, but haven't had therapy for this yet. I have had therapy in the past for e.g. workplace bullying.
As pp said, in the past you got on with it, as not having a job struck the fear of god into most of the older generation.