"Often when a Christian who loves the Lord is troubled by worldliness and sin in the church, he is met with this statement: 'There is no such thing as the perfect church.' ... The accusation that a person is looking for a perfect church has been successfully used to get men with a heart sensitive to God to compromise and stay where they should leave (for the good of their spiritual souls, for the good of their children and the good of their testimony.) By not leaving, they become disobedient and, over time, sear their conscience, harden their hearts, and become party to compromise."
Curtis Sluss, "Being in the Way, the Lord Led," as viewed at http://theprojector.org/projectors/spring2013.pdf.