I feel exactly the same. I cannot understand people that say if they won the lottery they'd get bored. That's insane to me. I have so many books I want to read, films to watch, video games to play, countries to visit, raves and festivals to go to. Why would you rather work instead of doing those things?! I want to start a family but what's the point when you only see your child in the evenings and weekends when you're all tired?
I was home educated but my parents are hippies and me and my siblings had no formal education. We just hung out. Played games, saw friends, went swimming in the river, read books, played with our cats. We'd visit castles or towns we've never been to. Make beer, take photographs, paint. I miss being able to do whatever I want.
I'm not sure they mean 'bored' so much as 'restless' or 'existential'. After a while of relaxing and consuming some people will feel like their life has no point or meaning. There are a lot of ways to find meaning, to make a mark on the world: writing, making music, raising children, or working for a nonprofit. When you take away the need to earn a living some people will gravitate to those pursuits. People already do those things in spite of the fact that it can be a tough and meager existence. What do you think would happen when automation makes the 'work or starve' system no longer necessary?
There are people who might be happy doing nothing but TV and video games for the rest of their life. But not everybody's like that.