Why are Adults so busy?
To me the struggle is the rare collision of having both free time and ANY energy at the point the free time comes.  Most of my energy goes into all those other buckets.  I can see why some people just stare at a TV (which I don't have) or do other passive entertainment (which I'm sure I do).  To be fair to myself...I do exercise (usually biking) 1-2 hours every day, which some will classify as "free time".  While it is often enjoyable, I don't consider it an optional, spontaneous, or random endeavor...which is usually what I consider "free" (or "unplanned") time.