Mothers Day has utterly confounded me as far back as I can remember. During my childhood years, spent unhappily suffocating in lily-white, middle-class, conservative suburbia, I was continually struck by the jarring disparities between mothers I met in public, at school, at friends’ homes and, especially, those that dominated TV screens and supermarket magazines in the 1970s and ’80s, and the woman I knew as “Mom.” For better and for worse, Mom shared next to nothing with mothers. The contrast was so striking in fact, it occurred to me on more than one occasion that I might be born from another species altogether.