I don't consciously avoid metaphors, or similes for that matter. If they don't happen in my writing, it may be because I find the thing I am writing about compelling enough without comparing is to something else. Maybe I don't want to introduce some completely different world or image. For instance, in the case of the cornmeal making little drops of condensation in the story Cornmeal, I could say, 'like little nipples on the underside of the plate,' but then you introduce nipples into the story. Or dew drops - 'like little dew drops' - but then you introduce the outdoor landscape. If I avoid metaphor, and if I have to think of a reason why, it may be that I don't want to distract from the one thing I'm concentrating on, and a metaphor immediately does that. It introduces some completely, even incongruous, other image and world.
Fragment uit een interview in The Paris Review met Lydia Davis.