"And a habit-free existence — as I wrote last week — isn’t really possible anyway. It would be an existence without expertise, and so a life without language or meaning."

I don't believe he's actually suggesting you get rid of all your habits (i.e. wife). He was just stating that habits make time pass quickly, and getting rid of them slows things down. But that doesn't mean we should get rid of them... just that we should realize and accept the tradeoff.