One possibility is that he "works hard" at that, too, e.g. by consciously thinking about what the best things to do with them are and endeavoring to spend as much as possible doing them. Perhaps if you internalize the idea that spending time with your family is in fact work, of a different but also valuable nature, then you will not find it as difficult.

He is an extremely dedicated father. Much of his Twitter feed is about things he does with his children.

He should let much more of that into his writing, because he could have written this post in 2007 and it would mostly read the same, and he's not the same person he was back then. Also, in sort of the same way that pg-writing-about-lisp is one of the harder pg's to dislike, dad-mode pg is probably his most likable and persuasive mode.