This article makes no mention of spouse or kids, both of which can be major distractions. For adults, it's very hard to not see someone as "here" even though they are just down the hall; for kids - it's impossible. The compromise my wife and I have is that I take time during the day to help out around the house or run errands, but I make up the time at night.

Also, I pretty much have my headphones on all the time, which is not so different from when I worked in a real office.