I'm also weirded out. Who wants to work? How can you not have as a life goal to not work? It sucks for the most part!
As for Marx and Keynes and others, thinking about what people will do if they're freed of labour, have you SEEN youtube? People are not lacking ideas on things to do, quite the opposite!
My work is my life's dream. I did it for years as a hobby making no $ (losing money really) and worked terrible tech jobs I hated until I could switch the two.
Now I work 80 hours per week but it feels like 5. So it's not work to me.
For me, I never actively sought out working a lot, it just happened: I managed to get into a position where something I'm good at is really useful to other people, and in return (besides cash and appreciation) they let me do even more of what I'm good at, as well as actively support my development in areas I could become very good at, but aren't yet (in return for to even more cash and appreciation).
Retrospectively, I pretty actively engineered my path into this position, even if there never was a very conscious plan. Plenty of small improvements, plenty of listening to my gut, plenty of being wrong and then trying to learn from that. But yeah, that's easy enough to say in retrospect, not something 10-years-ago me would have found very actionable.