It's been repeated many times on here, but I'll say it again.
If you have to start a job at 8 am, that means you must wake up an hour earlier, give or take. You will work, and arrive home somewhere around 5 pm given an average work day.
You will now need to shower, make food, and do other household activities. 8 hours of sleep is recommended, so you want to be in bed and asleep by 11 pm.
Let's say that you only have to do all these things for 2 hours. You have 4 hours of free time to do whatever you want.
Four hours. I don't know about you, but this feels a bit like a “live to work” lifestyle.