I have never wanted to have kids. Well, actually I did for about two weeks twenty-odd years ago in a moment of weakness (which didn't matter because I had no partner), but for the rest of my life, I've had no desire to have children.
Yet somehow this decision became more firm this summer. After my grandfather died, I realized that now I'll never change my mind. This caught me by surprise because I had never considered the two things to be linked. But when he died, I couldn't imagine raising a kid who never met my grandparents. Oddly enough, when I shared this thought with my wife, she said she felt that way after her grandparents died, too.