Infertility=Useless?

I’ve read on this sight that it is a requirement that all people are to have children to keep our communities flowing. But what if one is incapable of conceiving for whatever reasons aside from using birth control? Are they no longer useful? Are they worthless? In this religion it is viewed as crucial and top tier to have a family saying how extraordinaire it is to have them to the point where it’s as if not being able to have children makes them a weak person, whom have no purpose in life. Is that the case for those who do not want and/or cannot have children?