"Oh Church!" cartoon by nakedpastor David Hayward
Of course, this is taken from the words of Jesus in the gospel where he looks over Jerusalem and laments:
"Jerusalem, Jerusalem, you who kill the prophets and stone those sent to you, how often I have longed to gather your children together, as a hen gathers her chicks under her wings, and you were not willing.
I know a lot of people who would have stayed in the church if the church had made room for them. If it had just accepted them as they are! But no, it demanded conformity to its rules and expectations. Less and less people are willing to do that.
The church's greatest mission field is those it has rejected.