‘I am prouder of my years as a single mother than of any other part of my life’, says JK Rowling — Society has this cookie-cutter image of what a family should look like — two parents, 2.5 kids, a dog, and a white picket fence. First off, did you know that about one in eight women aged 18 to 60 worldwide are unmarried and have children? That’s right, 13% of women…