This is where it kinda comes back to what do you want to do in your retirement. Sitting at home and watching TV all day will eventually get boring - even depressing in the winter months when daylight is short and it's cold and wet outside.
Yep.
My dad is going through something similar. Retired earlier this year due to a medical event, had heart bypass surgery that basically forced him into retirement. Started with massive energy attacking the garden and decorating work, lasted about 3 months and then had a month in his chair in front of the TV. He is now looking at getting a part time job to keep busy.
I tell you, it's an incredibly valuable lesson for me observing all this in real time. Especially in my brother's case. He used to send me pictures from Singapore, NYC, Japan, Sydney, Brazil, and everywhere they travelled. I just thought to myself, keep running away from that boredom my boy. It'll get you eventually though. I used to be quite vocal on here about the upsides of FIRE, but seeing these examples, I don't know anymore. I'd rather just do a job I like, work with some cool people doing interesting stuff, with the money being a side benefit. Sitting at home with millions of shekels trying to figure out what to do day after day, seems like hell to me.