From his interview with Tyler Cowen:
Karl Knausgård: You have this almost archetypical male artist putting his art before his children, before his family, before everything. You have also Doris Lessing who did the same — abandoned her children to move to London to write.
I’ve been kind of confronted with that as a writer, and I think everyone does because writing is so time consuming and so demanding. When I got children, I had this idea that writing was a solitary thing. I could go out to small islands in the sea. I could go to lighthouses, live there, try to write in complete . . . be completely solitary and alone. When I got children, that was an obstruction for my writing, I thought.
But it wasn’t. It was the other way around. I’ve never written as much as I have after I got the children, after I started to write at home, after I kind of established writing in the middle of life. It was crawling with life everywhere. And what happened was that writing became less important. It became less precious. It became more ordinary. It became less religious or less sacred.
It became something ordinary, and that was incredibly important for me because that was eventually where I wanted to go — into the ordinary and mundane, even, and try to connect to what was going on in life. Life isn’t sacred. Life isn’t uplifted. It is ordinary and boring and all the things, we know.