And I generally don't sleep more than 5-6 hours a night (sometimes much less), or watch any TV, or even waste much time online anymore -- and I track it with RescueTime -- but getting 40 hours a week of real work done is still hard some weeks.
Raising kids -- doing it right, that is -- takes a lot of time & interaction. Then there's time keeping the house functioning & relatively clean, paying bills, grocery shopping, the various trivial little tasks that need doing...
I'm pretty sure 80 hours a week would be impossible unless I stopped sleeping altogether. Even once my daughter is in school, it'd be pretty rough going.
"I still work 80 hours a week," he admitted to Mark Lisheron of the Austin American-Statesman. "It used to be 80 hours on software, now it's 40 hours on software and 40 hours on Armadillo." Carmack did ease up a bit after he and his wife, Anna Kang, had their first child in 2004—he was getting home from the office at about midnight instead of 2:00 AM or 3:00 AM. Kang, however, insists that Sunday is family day, so Carmack compromises by reading technical manuals to his infant son.
ref. http://www.notablebiographies.com/news/A-Ca/Carmack-John.htm...