33 People Who Hilariously Recreated Their Childhood Photos

Why? It all comes down to choice, says William Chopik, Ph.D., author of the paper and a professor at Michigan State University. "I think it might have to do with the selective nature of friendships—we can keep around the ones we like and slowly fade out of the ones we don't," he explains. "We often spend leisure activities with friends too, whereas family relationships can often be stressful, negative, or monotonous."