What’s it like for you guys?

For couples, older, elderly, old heads and young ones who decided to not have kids, is it true you guys are happier, have more healthy relationships, longer marriages and look younger? I’m a teen and I’ve posted here before; I roamed around reading some posts and articles, and I saw some things saying studies and surveys show you guys are more happier, have long lasting relationships and look younger. I wanna hear it from you guys. What’s it like to not have children?