Since when did 40 hours equate to the majority of your life?
8 hours a day... 8 hours asleep... That's 16 hours gone. There are only 24 in a day, so only 8 hours left free, the morning ones usually spent getting ready for work and preparing kids for school, maybe some cleaning or walk the dog.
Home time gotta get dinner ready and help kids with homework and do laundry or whatever, wash dishes...
It just doesn't sound like much free time at all.
And yes, if you spend 8 hours a day working and 8 hours approx sleeping, and spend some of your free 8 hours a day prepping and doing chores and things you have to do to get through life, that's not really free-time to me.
The majority of the day is spent working or asleep, so on your entire life yeah, most of your time is spent working,.sleeping, or catching up on chores.etc. Minimal free time.
But hey, I've felt like this since young. I remember thinking we didn't get enough free-time when I was at school.