Another aspect, however, concerns motivation vs. commitment. When it comes to hobbies I am quite driven by motivation. Unfortunately, motivation often doesn't last long. That's why many people point out that commitment [doing something despite a momentary lack of motivation] > motivation.
And this gets me back to square one as commitment is something I rather associate with corporate culture than leisure time.
[Of course, you could make being commited x times a week a goal to get some satisfaction out of it but I doubt that would work for me. It probably also depends on the activity: I can commit myself to regular exercise but I can not force myself to sit down and write some music 3x/week]
Many (not all) professional novelists have a schedule, to ensure they write each day. They force themselves to type X words, or sit there for X hours (they get bored and start writing). But that's work, not leisure.
I think a distinction here is relaxation verses intrinsically meaningful activity. Many people find the latter the most rewarding... but goofing off and aimlessly following our whims, just for fun, has a place too. (Actually this worked well for Feynman).