Five years into her marriage to a finance executive, Clare* is still doing the sums on leaving behind a life unencumbered by the high price of parenthood. At 31, the Singaporean doctor instead finds herself wondering if she will feel different about their “dink” (dual income, no kids) lifestyle in another three years. “The thought of having kids also feels more like an obligation just to complete the nuclear family,” she said. “I see so many more disadvantages about having children, rather than...