From The Nervous Breakdown:
Are the essays in this book eulogies?
Yes…and no. We did try to take each of these dead persons seriously and therefore to write with some sympathy. In general, even with the living, we try to take people seriously and on their own terms. But the job of writing about recently deceased persons of note is not to say something nice simply for the sake of saying something nice. It is about digging and scratching at the lives in order to see what comes to the surface. Sometimes, this creates surprises.
What do you mean surprises? Can you give an example?
[Morgan] Well, when I started writing about Christopher Hitchens he had literally just died. I became very emotional as I wrote. The whole thing was written while crying, to be honest. I realized two things. One, that I had a lot of anger and resentment toward the man and two, that I actually loved him, in the non-romantic sense of the term. I realized that this love was generated by something other than the usual regard for his writing and argumentative skill. In fact, upon reflection, I realized that his writing and argumentative skill were, to my mind, overrated. That made my deep feeling of connection to the man all the more mysterious, a fact that pleased the hell out of me the more I thought about it. I tried to capture some of that in the essay, which, if it has any virtue at all, has the virtue of mostly refraining from restating the well-worn Hitchens clichés. The more I wrote about Hitch, the more I realized that I have no idea why he was such a powerful person.
More here.