We need the single men and women so we can teach our kids to wait on the Lord for His marital blessing and it's ok to wait however long! And likewise, those singles need to be exposed to the joys of children, and sometimes the disipline required.
We need the widows and widowers, the raggedly dressed guy who wanders in the back door, the struggling families, the families with one kid who can't comprehend "how you do it", the bigger families, the "normal" families, the broken families, the people fighting diseases... How on earth do we teach them about Heaven's grace and God's sovereignty when they are taken away from this to learn children's songs and glue cartoon pictures on construction paper (which they can do at home after church, btw)? They learn empathy here, they learn manners here, they get hands-on servitude here, they learn what Christ's body is here, for better or for worse!
"We will not hide them from their children, shewing to the generation to come the praises of the Lord, and his strength, and his wonderful works that he hath done." (Psalms 78:4 KJV)
...lesson? We wonder why rape is on the rise; why women being beaten and assaulted has become so that isn't publically shamed? We women have some culpability in this, too. The fact that is family was more concerned with the pastor not officiating than wondering about the dress proves it.