Friends/acquaintances with young children always want to know why my wife and I chose not to have kids. I get very dirty looks when my first answer is "there are already too damn many people in the world as it is"

The economists are the worst. "Don't you know, we need children to fund your retirement! Economies need a growing population!"

Yeah, fuck off. That's not sustainable and you know it. We're going to need to figure out how to make shrinking populations work.