Work, sleep, commute, eat, keep yourself fed, keep you and the house clean, maybe do some exercise and a bit of whatever out of the ordinary needs to be done (shopping for new shoes, fixing stuff in the house, doing the taxes).
Leaves maybe 4h and it's fair to have to rest 1 of it with some no-brain activity.
So 3h for family, romance, hobbies, learning non-job related stuff, politics, culture, reading, friends, side projects, building things, helping someone, etc...