It's simple, I don't have things like that that I need to do on any sort of daily basis.

I have a work calendar for work meetings, but never saw a need for personal calendar.

OK sure I put doctor and dentist on my personal calendar, but dentist is 2x a year and doctor is like once a year for a physical. On my personal calendar I might have a dozen things put on it for the whole year. Some upcoming family event, some wedding, etc.

My dentist and doctor schedule the next appointment during my appointment. So if I had my annual physical appointment tomorrow, my next appointment would be 8/23/2026 which I definitely would not remember, even if they gave me an appointment card. If I'm lucky they'll call me to remind me a few days before, but having it on my calendar ensures that I don't schedule a meeting (or travel!) during that time.

I probably have 20-30 “personal”events a week. But that’s because I have two kids.