You went too hard in the other direction. Sure parents aren’t miserable, but studies do show childless adults are happier. Maybe they’re less fulfilled? That’s hard to say if you never wanted kids. Also you can enjoy being around friends and make their lives better and invest in your community, not like kids, and still be very fulfilled. If you don’t enjoy kids that doesn’t impact your life negatively unless you don’t understand how to be happy on your own.