I didn't drop down to 40 hours until I became a parent. With a 30 minute lunch and 90 minute total commute, an 8 hour day is 10 hours planned. Shower/breakfast is about half an hour. General looking around the internet before work, probably another half hour. So 11 hours from waking up, I'd be home and ready to do whatever. If we toss in 8 hours of bedtime, that's 5 hours somewhat free - when I wasn't a parent, dinner was whatever I wanted it to be. Can't really count that as infringing on your free time. What chores do you really need to do - dishes you should do every day, laundry you can do weekly, and most other things can wait until the weekend. 40 hour work week = tons of free time
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Donny: Are they gonna hurt us, Walter?
Walter: No, Donny. These men are cowards.