I personally have a lot of “non-work” time, but not that much leisure time. I just fill up time with personal projects, and stuff like house renovation that I would have otherwise put off.
In fact “work time” is only defined for me as “time I do stuff to get paid so I can make other stuff”. So yeah if I could “work” as little as possible, it’d be pretty good.
One is the playful way that explores the problem domain. This does not feel so much like work.
The other can take on a monotonous job at high intensity for days on end, satisfied there is no better way.
For a long time, it was almost always that my free time was in the former and my work in the latter. This resulted in a lot of unfinished personal projects and a deep dissatisfaction with work.
My most productive work has definitely a blend of the two, and there is a skill in knowing when to switch between.
"I don't have to, but I have some time for this" is THE reason that those activities are relaxing. I have to haul some wood recently, but because I absolutely have to do it before the wood is spoiled and because I have many other activites I have to do and too little time, I can't count that as leisure. Last week I had a kind of breakdown and spent whole day gaming. That was THE best day this year, I rested even better than with 1 week of kayaking that I do every year as holidays (which actually became another chore to do with family).
Shrink that denominator!