People who are retired or don't need to work should certainly be able to fill their time as they see fit, but I would find it concerning if someone spent ALL of their time napping and binge watching TV. I would think that doing that, or wanting to do that, for more than a few days would be an indication that there is an issue with their mental health that needs addressing.
It's wonderful when not being in full time employment (in which I include being a stay at home parent) getting up when you want every morning, making your own schedule, and not having to do something 40 hours a week if you don't want to. For me at least though, I find it important to have some kind of very flexible schedule and routine.
I think "purpose" and "meaning" can be found in leisure activities, but I do think everyone needs some kind of purpose, whatever that is, for a fulfilling life.
I spend my time volunteering, exercising, crafting, reading, and cooking (in a relaxed way without the pressure of having to get a meal on the table at an exact time). I also do less productive things like watching tv and playing on my phone, but I know I wouldn't feel happy or healthy if I let myself do things like that too much.