The church has had 2000 years to win the world by religion, and many times the religion is “sour”. Religion by rules never worked in the Old Testament under the law. People do well under love and grace. Jesus was the friend of children and sinners.
For many who grew up in church as children, all they remember was a bunch of rules. The church ought to be a joyful, accepting warm place especially for children. In most cases they equate Jesus with how we represent him. Tis a great responsibility. We want children to see Jesus as “sweet” not “sour”.