It would promote charity. Religion helps people to overcome or simply deal with hardship and loss. Religion, and by extension the organized church, can be a positive force for social change. It provides structure and community that influence individual behavior. Religion teaches redemption and the ability to forgive.
Religion provides a means to overcome fear.
Broadening the role of religion in public life can help people understand where morals and values come from. It would give people a common vocabulary. It would give people hope and provide framework for individuals to find meaning in their lives. It might transform religion itself in a healing way. It would move religion away from sectarian beliefs to what is human and good.