If you want to have kids, that's cool. But fuck you for pretending not to judge those who voluntarily choose not to. It's not sad, and childless people will not necessarily die alone as you imply. As a mother of adult kids who knows the great joy and terror of raising children, and someone with friends who chose not to have kids long ago, I salute those who made the altruistic decision to reduce the plague on the earth that is the human race and protect their potential offspring from their genetic history, lack of parenting skills, or just this lousy world. Parents, the most self-serving decision we ever made was to have kids. I'd do it all over again, but let's be real: We are the selfish ones.