Because it becomes self-evident to any parent that the pain of loving and caring for another thing is better than the ease of not. I will admit even fur parents know this secret. Parenthood begins as an expression of narcissism, of personal genetic redoubling; but that selfishness is quickly burned away in the crucible of tears, vomit, fevers, and close calls; and it is repaid only in the incalculable joy of seeing someone else thrive in happiness and apart from you. You disappear, and it is a fucking relief.

