The U.S. senior population is expected to double by 2050. And while they’re staying healthier longer, and living longer too, these ads deftly demonstrate that life’s packed with curveballs you don’t expect—like strokes or broken hips. (We often forget that, at some point, we all become less able to varying degrees.) Perhaps most stunning is the isolation in which many of Meals on Wheels clients live. They are depicted as happy, independent adults who live full lives—but much of that happiness is tied to the safety, comfort…