Having a tot or two can increase your lifespan — no kidding. Selfishly reveling in the child-free lifestyle has newly become all the rage among footloose millennial couples — better known as “DINKS,” an acronym for Double Income No Kids — who’d prefer changing time zones by traveling the world rather than changing rank diapers. However, a December 2023 study from the University of Michigan suggests that parenting children can actually extend a person’s life expectancy to age 76. “One thing that is relatively clear is that having children is more beneficial to longevity than not having children at all,”...