I've never understood people who get bored in retirement. I looked forward to it from the very start of my career, and now that I am retired I've gotten so into hobbies and interests that it feels like there still isn't enough time for everything.
It's amazing how much energy you get from waking up without the obligation to go somewhere and work on somebody else's shit all day because you have to. Gives me a big smile every morning!
Oh yeah I forgot, careers were an endlessly fulfilling series of fun exciting tasks. And job interviews were like, "A white male with a college degree? You're hired!" Everybodty's ignorant fantasies about the past are staggeringly accurate!
Objectively I know millions of people simply go to work, come home, eat dinner, watch TV and go to bed. Repeat until dead. I just personally find it hard to relate to that frame of mind. Maybe they fear retirement would be boring because their lives are already boring and the only stimulation they get is at work - but to me that's sad to imagine.