>Our society is such that we typically work 8 out of 24 hours(33%)

I always think you should look at the effective free time you have left. I can't do much in my sleep (-8h), I can't do much on my commute (-1.5h), I can't do much in my lunch break (I have to take a 45 minute lunch break by law, it's way too short to use it as actual free time, but takes another significant chunk out of your day.)

I get to 24h-8h-8h-1.5h-0.75h = 5.75h of E.F.T. that's only 24% of your day you actually have for yourself, assuming comparatively reasonable western working times and pretty average commute times.

76% of your day is not effectively free time.