I've been asked about this constantly, and I compare it to how if you're walking down the street and some schizo guy comes up to you and vomits on you: You wouldn't be hurt by that, you'd just think it's weird.
If you're doing an interview, you need conversational tension. After you talk to them, you're not going to have a relationship with them, they're not going to like you, they're not going to be your friend.
Book writing is a little different because, in my case, my editor is a year younger than me and basically has the same sensibility as me.
I feel sorry for people who have to edit me. Which is why book writing is by far the most enjoyable. Really the only thing it's based on is whether it's good or not. No book editor, in my experience, is getting a manuscript and try to rewrite it.