>couple in our late 30s who decided not to have kids

I fear for people who choose this path. Being childless in your 30s sounds like a blast. But that's just one stage of your life. How fun is life going to be when you're 40+? Or when your health begins to decline? Maybe it will be worth it, maybe not. When I visit older relatives who are childless (at least to me) their lives come off as hollow and sad.