President Peter is right, of course. Lots more people identify themselves as UU than are members of our congregations. Only a third of Baby Boomers are active in a church, about half of the same measure among the generation before them. Participation falls off a cliff in the generations younger than the Boomers. New forms of organization are going to be required; our present congregations will have to be our base camps for explorations into the wider world.
This would be a dire situation if Liberal Religion did not have a meaning and a message that can help lots of people grow into the people that they want to be. But we do.
In a world where most people are defined by others, either through discrimination and stereotyping, or through aggressive acculturation, Unitarian Universalism and Liberal Religion calls people to self-definition and self-determination. We also call people to open-mindedness, which I think is a spiritual aspiration for a large number of people.
We have the message; there are numerous methods for developing these attributes. The modality we offer -- religious community in a congregation -- no longer works.