I only just retired age 70.
I was lucky, I absolutely loved my working life which was dealing with musicians and caring and or rebuilding their instruments. Such a great life, no management, great relationships with all my clients, enough concerty pressure to keep me alert but nothing lifesavingly urgent. I didn't really want to retire at all but covid and then some illness/ hospital visits restricted my work. So I was again lucky and found a young person wanting to step into my shoes. I was (still am really) mentoring him for a couple of years and can now relax happy that my clients are looked after properly. For that was my biggest concern about retiring; I really didn't want to leave my clients in the lurch as my field is a bit specialist and replacement people getting rarer and rarer.
More time for days out now but still missing the contact with musicians.
Nick