I believe ministry to children is an indispensable part of a church.
It is not just a matter of the adults in the church need a place for their children to be while they participate in spiritual exercises. It is also that the children as they grow need to learn their own spiritual nature. And it is also that the church has a responsibility before God, to minister to children.
The church must always remember children are important to God. He made this clear by including them and emphasizing their importance during His earthly ministry. He also made it clear the faith of a child is a precious and special faith, which is not to be wasted or depreciated.
So ministry to children should be more than just childcare. Even for the youngest of children, special care should be taken to make them feel safe, loved and to train them in Christianity. This means teaching them to love God and to serve God through the church. Their ministry be carefully planned and intentionally structured. The spiritual lessons should be carefully ordered and presented.
Since children are important to God, they must be important to us too.